The text file text txt , is used by the program as the source of data for the project Compile and run the program, as given, to ensure that it works The project c source program consits of the following four(4) subprograms int read text(char p text , FIle fp) This function is called by the main program to read the input text txt file, line by line, and return the entire text in the array of pointers char p text MAX NUM LINES Please read the documentation in the source code of the function for details The code for this function is given and no modifications are required by you void write text inorder(char p text , nlines) This subroutine takes the p text array of pointers as argument, and the number of lines it contains (nlines) The subroutine prints the contents of the pointer array in the same order that it was input by the read text function Please read the documentation in the source code of the subroutine for details Task The subroutine header is given, you are to write the body Note If there are no lines of text to print, you must output a message to that affect using the MSG INFO enumerated message type and the report message( ) routine void write text reverse(char p text , nlines) This subroutine takes the p text array of pointers as argument, and the number of lines it contains (nlines) The subroutine prints the contents of the pointer array in the REVERSE order that it was input by the read text function That is, the last input line of text is printed first, the second last input line is printed second, and so on Please read the documentation in the source code of the subroutine for details The subroutine header is given, you are to write the body Note If there are no lines of text to print, you must output a message to that affect using the MSG INFO enumerated message type and the report message( ) routine void report message(char msg MAX MSG NUM MAX MSG LNG , enum msg kind type msg kind ) This routine prints a given message, msg , in a standardized format with each message type having a unique message prefix to identify the message on output For example, an information message (MSG INFO) has a prefix of MSG , while an error message (MSG ERROR) has a prefix of ERR Please read the documentation in the source code of the subroutine for details Your task is to create a NEW enumerated message type kind called MSG END , and use it to print the Program Terminated Have a great day message in a standardized fashion using the report message( ) routine The output message MUST look like this END Program Terminated Have a great day Follow the example of the other enumerated message types, and how they are use to print a message text txt Life is a challenge meet it, Life is a gift accept it, Life is a sorrow overcome it, Life is a tragedy face it, Life is a mystery unfold it, Life is an opportunity take it, Life is a promise complete it, Life is a struggle fight it, Life is a goal achieve it, Life is love love it, Life is adventurous have fun, Life is a duty perform it, Life is a game out smart it, Life is a beauty praise it, Life is great make something good of it So life is a celebration eat, laugh and do meditation project c include include include include 49 Define machine independent TRUE and FALSE values 51 54 ifdef TRUE undef TRUE undef FALSE endif define TRUE (1 1) define FALSE (O 1) ' ' GLOBAL MACRO DEFINITIONS define NL New Line string define NL ' ' New Line char define LF Line Feed string define cLF Line Feed char define CR Carriage Return string define CCR ' Carriage Return char define CRLF Carriage Return Line Feed define LFCR Line Feed Carriage Return define FF Form Feed define NUL 10 Null string define CNUL Null character define BLK Single Blank string define CBLK Single Blank character f define cuScore define UScore define CZERO TO' Underscore character Underscore string Single ZERO character define HTAB define cHTAB define VTAB define CVTAB define ESC t It' v Iv' x1B Horizontal Tab string Horizontal Tab character Vertical Tab string Vertical Tab character Escape string hex(1B) dec(27) 84 GLOBAL STATEMENT FUNCTION DEFINITIONS define F MIN (V1, V2) (((v1) (v2)) (v1) (v2)) define ZF MIN (v1, V2) (F MAX( , (F MIN( (v1), (v2))))) define ZF(v) (F MAX(0, (v))) define F NOT(v) (((v) TRUE) FALSE TRUE), define F ABS(v) (((V) 0 ) (v) ( (v))), Return the less of v1 and v2 Return the greater of v1 and v2 Like F MIN, but lower bounds the result at ZERO Lower bounds the value V at ZERO Logical Negation Absolute value GLOBAL Constants define MAX NUM LINES 500 define MAX LINE LNG 81 Max number of lines Max length of line One extra byte for terminating null 96 define MAX MSG NUM 10 define MAX MSG LNG 133 Number of message lines Length of a message string Max of 132 chars 1 for terminating null byte GLOBAL VARIABLES and STRUCTURE DEFINITIONS char msa IMAX MSG NUM) (MAX MSG LNG Message buffer Can hold MAX MSG NUM messages, each MAX MSG LNG chars long 98 99 100 101 102 103 104 105 106 enum msg kind type(MSG INFO, MSG WARNING, MSG ERROR MESSAGE type or kind of message (Enumerated Type) Information Warning Error GLOBAL FUNCTION PROTOTYPES int read text (char p text , FILE fp ) 108 109 void write text inorder(char p text(), int nlines) 112 void write text reverse(char p textil, i nt nlines) 114 115 116 117 118 void report message (char enum msg MAX MSG NUM MAX MSG LNG), msg kind type msg kind ) 120 121 int main(int argc, char argv ) setbuf(stdout, NULL) 122 123 int nlines int return val No of lines read from input file Main program return value to os (Operating System) 125 126 127 char p text MAX NUM LINES 128 129 Array of pointers to char Have a total number of MAX NUM LINES pointers Input file name Input file pointer 130 char filename in text txt FILE fp in NULL 131 return val Assume all is well 132 133 134 135 Initialize msg message buffer by filling entire buffer with NULLS for (int i 0 i 0) 147 write text inorder(p text, nlines) write text reverse(p text, nlines) Call subprogram to print in order Call subprogram to print in reverse order 149 else Handle excessive number of input lines Indicated by nlines 1 sprintf(msg 0 , s , Input file too large to process ) sprintf(msg 1 , s d , Max number of input lines allowed , MAX NUM LINES) sprintf(msg 2 , s , Program Execution Aborted ) report message(msg, MSG ERROR) return val 1 Set up to return ERROR condition ( 1) to os 157 158 fclose(fp in) Close input file here since it was opened successfully 159 160 161 162 printf( Program Terminated Have a great day ) 163 return (return val) Return to os 164 165 166 167 168 169 170 171 172 173 174 int read text(char p text , Array of pointers to char FILE fp ) Input file pointer This function reads consecutive lines of text from the input file fp , until either the end of file is reached, or the end of the array of pointers is reached Each input line is saved stored in dynamic storage and it is accessed referenced by a pointer of the p text array That is, p text 0 points to the FIRST input line, 11 p text 1 points to the SECOND input line, and so on The function returns 1) The array of pointers p text that point to each input line 112 ) The number of lines read, if all went well, otherwise 1 3) Return 1, if an error has occurred 175 176 177 178 int int int char char int i nlines line lng line MAX LINE LNG) p return val Loop index Line counter of lines read Length of current input line Local storage for the current line of text just read Pointer to dynamically allocated storage Value returned by the function 179 180 181 182 183 184 185 186 187 188 189 190 191 192 nlines return val 0 So far, all is well while ( (fgets(line, MAX LINE LNG, fp) NULL) (return val 0)) i 0 while linelul NUL) (i 232 233 return void write text reverse(char p text , Array of pointers to lines of input int nlines) Number of input lines pointed to referenced by array of pointers This subroutine prints all input lines of text referenced by the p text array of pointers Input lines are printed in the REVERSE order that they were read in A suitable heading is printed to indicate the nature of the output The report message() routine is called to output an appropriate MSG INFO message if there are no lines of text to print 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 return void report message(char msg MAX MSG NUM (MAX MSG LNG), Message buffer enum msg kind type msg kind ) Message kind, i e kind of message INFO, WARNING, or ERROR EEEEEEEEEEEEEEEEEEEEEEE Given the 2D message buffer msg and the type kind of message to print, this routine prints the message in a standardized format Each message type has a unique prefix which is printed with the first message line to serve as a label for the message, and each subsequent message line, if present, is indented accordingly Each line of the message buffer is printed sequentially, starting with the first line (index 0), and ending when either the last line of the buffer is printed, or the first NULL line is encountered static char pname' report message sub program name 261 263 264 register int i static char info prefix static char warn prefix static char err prefix static char indent MSG WRN ERR printf(NL) Print a blank line to separate the message from previous output 266 267 268 269 270 Switch on msg kind to determine which message prefix to output 271 272 273 switch (msg kind) case MSG INFO printf(info prefix) break D case MSG WARNING printf(warn prefix) break A Switch statement is the ONLY place where a break is allowed because it is part of the Switch Syntax 278 279 case MSG ERROR printf(err prefix) break 280 281 282 283 284 285 286 287 288 default Always check for an un handled msg kind printf( INTERNAL Error in function s , pname ) printf( Invalid msg kind d , msg kind) break Output the contents of the msg buffer, starting with the first message line NOTE The first message line is ALWAYS output because message buffer is guaranteed to contain at least one message line 289 290 msg 0 MAX MSG LNG 1) (NUL 291 292 293 294 Null last position of message, in case message is longer than buffer, or message is not nulled Can never be too trustworthy when it comes to handling strings in C 295 printf( s , msg 0 ) Always print first message 295 296 297 printf( s , msg 0 ) Always print first message for (int j 0 j include include include 49 Define machine independent TRUE and FALSE values 51 54 ifdef TRUE undef TRUE undef FALSE endif define TRUE (1 1) define FALSE (O 1) ' ' GLOBAL MACRO DEFINITIONS define NL New Line string define NL ' ' New Line char define LF Line Feed string define cLF Line Feed char define CR Carriage Return string define CCR ' Carriage Return char define CRLF Carriage Return Line Feed define LFCR Line Feed Carriage Return define FF Form Feed define NUL 10 Null string define CNUL Null character define BLK Single Blank string define CBLK Single Blank character f define cuScore define UScore define CZERO TO' Underscore character Underscore string Single ZERO character define HTAB define cHTAB define VTAB define CVTAB define ESC t It' v Iv' x1B Horizontal Tab string Horizontal Tab character Vertical Tab string Vertical Tab character Escape string hex(1B) dec(27) 84 GLOBAL STATEMENT FUNCTION DEFINITIONS define F MIN (V1, V2) (((v1) (v2)) (v1) (v2)) define ZF MIN (v1, V2) (F MAX( , (F MIN( (v1), (v2))))) define ZF(v) (F MAX(0, (v))) define F NOT(v) (((v) TRUE) FALSE TRUE), define F ABS(v) (((V) 0 ) (v) ( (v))), Return the less of v1 and v2 Return the greater of v1 and v2 Like F MIN, but lower bounds the result at ZERO Lower bounds the value V at ZERO Logical Negation Absolute value GLOBAL Constants define MAX NUM LINES 500 define MAX LINE LNG 81 Max number of lines Max length of line One extra byte for terminating null 96 define MAX MSG NUM 10 define MAX MSG LNG 133 Number of message lines Length of a message string Max of 132 chars 1 for terminating null byte GLOBAL VARIABLES and STRUCTURE DEFINITIONS char msa IMAX MSG NUM) (MAX MSG LNG Message buffer Can hold MAX MSG NUM messages, each MAX MSG LNG chars long 98 99 100 101 102 103 104 105 106 enum msg kind type(MSG INFO, MSG WARNING, MSG ERROR MESSAGE type or kind of message (Enumerated Type) Information Warning Error GLOBAL FUNCTION PROTOTYPES int read text (char p text , FILE fp ) 108 109 void write text inorder(char p text(), int nlines) 112 void write text reverse(char p textil, i nt nlines) 114 115 116 117 118 void report message (char enum msg MAX MSG NUM MAX MSG LNG), msg kind type msg kind ) 120 121 int main(int argc, char argv ) setbuf(stdout, NULL) 122 123 int nlines int return val No of lines read from input file Main program return value to os (Operating System) 125 126 127 char p text MAX NUM LINES 128 129 Array of pointers to char Have a total number of MAX NUM LINES pointers Input file name Input file pointer 130 char filename in text txt FILE fp in NULL 131 return val Assume all is well 132 133 134 135 Initialize msg message buffer by filling entire buffer with NULLS for (int i 0 i 0) 147 write text inorder(p text, nlines) write text reverse(p text, nlines) Call subprogram to print in order Call subprogram to print in reverse order 149 else Handle excessive number of input lines Indicated by nlines 1 sprintf(msg 0 , s , Input file too large to process ) sprintf(msg 1 , s d , Max number of input lines allowed , MAX NUM LINES) sprintf(msg 2 , s , Program Execution Aborted ) report message(msg, MSG ERROR) return val 1 Set up to return ERROR condition ( 1) to os 157 158 fclose(fp in) Close input file here since it was opened successfully 159 160 161 162 printf( Program Terminated Have a great day ) 163 return (return val) Return to os 164 165 166 167 168 169 170 171 172 173 174 int read text(char p text , Array of pointers to char FILE fp ) Input file pointer This function reads consecutive lines of text from the input file fp , until either the end of file is reached, or the end of the array of pointers is reached Each input line is saved stored in dynamic storage and it is accessed referenced by a pointer of the p text array That is, p text 0 points to the FIRST input line, 11 p text 1 points to the SECOND input line, and so on The function returns 1) The array of pointers p text that point to each input line 112 ) The number of lines read, if all went well, otherwise 1 3) Return 1, if an error has occurred 175 176 177 178 int int int char char int i nlines line lng line MAX LINE LNG) p return val Loop index Line counter of lines read Length of current input line Local storage for the current line of text just read Pointer to dynamically allocated storage Value returned by the function 179 180 181 182 183 184 185 186 187 188 189 190 191 192 nlines return val 0 So far, all is well while ( (fgets(line, MAX LINE LNG, fp) NULL) (return val 0)) i 0 while linelul NUL) (i 232 233 return void write text reverse(char p text , Array of pointers to lines of input int nlines) Number of input lines pointed to referenced by array of pointers This subroutine prints all input lines of text referenced by the p text array of pointers Input lines are printed in the REVERSE order that they were read in A suitable heading is printed to indicate the nature of the output The report message() routine is called to output an appropriate MSG INFO message if there are no lines of text to print 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 return void report message(char msg MAX MSG NUM (MAX MSG LNG), Message buffer enum msg kind type msg kind ) Message kind, i e kind of message INFO, WARNING, or ERROR EEEEEEEEEEEEEEEEEEEEEEE Given the 2D message buffer msg and the type kind of message to print, this routine prints the message in a standardized format Each message type has a unique prefix which is printed with the first message line to serve as a label for the message, and each subsequent message line, if present, is indented accordingly Each line of the message buffer is printed sequentially, starting with the first line (index 0), and ending when either the last line of the buffer is printed, or the first NULL line is encountered static char pname' report message sub program name 261 263 264 register int i static char info prefix static char warn prefix static char err prefix static char indent MSG WRN ERR printf(NL) Print a blank line to separate the message from previous output 266 267 268 269 270 Switch on msg kind to determine which message prefix to output 271 272 273 switch (msg kind) case MSG INFO printf(info prefix) break D case MSG WARNING printf(warn prefix) break A Switch statement is the ONLY place where a break is allowed because it is part of the Switch Syntax 278 279 case MSG ERROR printf(err prefix) break 280 281 282 283 284 285 286 287 288 default Always check for an un handled msg kind printf( INTERNAL Error in function s , pname ) printf( Invalid msg kind d , msg kind) break Output the contents of the msg buffer, starting with the first message line NOTE The first message line is ALWAYS output because message buffer is guaranteed to contain at least one message line 289 290 msg 0 MAX MSG LNG 1) (NUL 291 292 293 294 Null last position of message, in case message is longer than buffer, or message is not nulled Can never be too trustworthy when it comes to handling strings in C 295 printf( s , msg 0 ) Always print first message 295 296 297 printf( s , msg 0 ) Always print first message for (int j 0 j

Question

The text file  text txt , is used by the program as the source of data for the project  Compile and run the program, as given, to ensure that it works  The  project c  source program consits of the following four(4) subprograms  int read text(char  p text  , FIle  fp)  This function is called by the main program to read the input  text txt  file, line by line, and return the entire text in the array of pointers  char  p text MAX NUM LINES   Please read the documentation in the source code of the function for details  The code for this function is given and no modifications are required by you  void write text inorder(char  p text  , nlines)  This subroutine takes the  p text  array of pointers as argument, and the number of lines it contains (nlines)  The subroutine prints the contents of the pointer array in the same order that it was input by the  read text  function  Please read the documentation in the source code of the subroutine for details  Task  The subroutine header is given, you are to write the body  Note  If there are no lines of text to print, you must output a message to that affect using the  MSG INFO  enumerated message type and the report message(   ) routine  void write text reverse(char  p text  , nlines)  This subroutine takes the  p text  array of pointers as argument, and the number of lines it contains (nlines)  The subroutine prints the contents of the pointer array in the REVERSE order that it was input by the  read text  function  That is, the last input line of text is printed first, the second last input line is printed second, and so on  Please read the documentation in the source code of the subroutine for details  The subroutine header is given, you are to write the body  Note  If there are no lines of text to print, you must output a message to that affect using the  MSG INFO  enumerated message type and the report message(   ) routine  void report message(char msg MAX MSG NUM  MAX MSG LNG , enum msg kind type msg kind )  This routine prints a given message,  msg , in a standardized format with each message type having a unique message prefix to identify the message on output  For example, an information message (MSG INFO) has a prefix of      MSG   , while an error message (MSG ERROR) has a prefix of      ERR     Please read the documentation in the source code of the subroutine for details  Your task is to create a NEW enumerated message type kind called  MSG END , and use it to print the  Program Terminated  Have a great day   message in a standardized fashion using the report message(   ) routine  The output message MUST look like this      END  Program Terminated    Have a great day  Follow the example of the other enumerated message types, and how they are use to print a message  text txt Life is a challenge   meet it, Life is a gift   accept it, Life is a sorrow   overcome it, Life is a tragedy   face it, Life is a mystery   unfold it, Life is an opportunity   take it, Life is a promise   complete it, Life is a struggle   fight it, Life is a goal   achieve it, Life is love   love it, Life is adventurous   have fun, Life is a duty   perform it, Life is a game   out smart it, Life is a beauty   praise it, Life is great   make something good of it  So life is a celebration   eat, laugh and do meditation  project c  include  include  include  include 49    Define machine independent TRUE and FALSE values 51 54  ifdef TRUE  undef TRUE  undef FALSE  endif  define TRUE (1  1)  define FALSE (O  1) ' '         GLOBAL MACRO DEFINITIONS      define NL        New Line string  define NL ' '    New Line char  define LF        Line Feed string  define cLF    Line Feed char  define CR        Carriage Return string  define CCR '     Carriage Return char  define CRLF        Carriage Return Line Feed  define LFCR        Line Feed Carriage Return  define FF    Form Feed  define NUL  10     Null string  define CNUL    Null character  define BLK    Single Blank string  define CBLK    Single Blank character   f   define cuScore    define UScore    define CZERO TO'    Underscore character    Underscore string     Single ZERO character  define HTAB  define cHTAB  define VTAB  define CVTAB  define ESC   t   It'   v   Iv'   x1B     Horizontal Tab string    Horizontal Tab character    Vertical Tab string    Vertical Tab character    Escape string  hex(1B)   dec(27)  84          GLOBAL STATEMENT FUNCTION DEFINITIONS      define F MIN (V1, V2) (((v1) (v2))  (v1)  (v2))  define ZF MIN (v1, V2) (F MAX( , (F MIN( (v1), (v2)))))  define ZF(v) (F MAX(0, (v)))  define F NOT(v) (((v)    TRUE)   FALSE  TRUE),  define F ABS(v) (((V)    0 )  (v) ( (v))),    Return the less of v1 and v2    Return the greater of v1 and v2    Like F MIN, but lower bounds the result at ZERO    Lower bounds the value  V  at ZERO     Logical Negation     Absolute value         GLOBAL Constants           define MAX NUM LINES 500  define MAX LINE LNG 81    Max  number of lines     Max  length of line  One extra byte for terminating null  96  define MAX MSG NUM 10  define MAX MSG LNG 133    Number of message lines     Length of a message string  Max of 132 chars  1 for terminating null byte          GLOBAL VARIABLES and STRUCTURE DEFINITIONS   char msa IMAX MSG NUM) (MAX MSG LNG     Message buffer  Can hold MAX MSG NUM messages, each MAX MSG LNG chars long  98 99 100 101 102 103 104 105 106 enum msg kind type(MSG INFO, MSG WARNING, MSG ERROR      MESSAGE type or kind of message  (Enumerated Type)    Information     Warning  Error          GLOBAL FUNCTION PROTOTYPES     int read text (char  p text  , FILE  fp )  108 109 void write text inorder(char  p text(), int nlines)  112 void write text reverse(char  p textil, i nt nlines)  114 115 116 117 118 void report message (char enum msg  MAX MSG NUM   MAX MSG LNG), msg kind type msg kind )  120 121 int main(int argc, char  argv  )         setbuf(stdout, NULL)  122 123 int nlines  int return val     No  of lines read from input file     Main program return value to os (Operating System)  125 126 127 char  p text  MAX NUM LINES   128 129    Array of pointers to  char     Have a total number of MAX NUM LINES pointers     Input file name     Input file pointer  130 char filename in      text txt   FILE  fp in   NULL  131 return val         Assume all is well  132 133 134 135    Initialize  msg  message buffer by filling entire buffer with NULLS  for (int i 0  i 0)   147 write text inorder(p text, nlines)  write text reverse(p text, nlines)     Call subprogram to print in order     Call subprogram to print in reverse order  149  else      Handle excessive number of input lines  Indicated by  nlines    1  sprintf(msg 0 ,   s ,  Input file too large to process  )  sprintf(msg 1 ,  s d  ,  Max  number of input lines allowed    , MAX NUM LINES)  sprintf(msg 2 ,   s ,  Program Execution Aborted  )  report message(msg, MSG ERROR)  return val    1     Set up to return ERROR condition ( 1) to os  157 158 fclose(fp in)     Close input file  here  since it was opened successfully  159 160 161 162 printf( Program Terminated  Have a great day  )  163 return (return val)     Return to os  164 165 166 167 168 169 170 171 172 173 174 int read text(char  p text  ,    Array of pointers to char  FILE  fp )     Input file pointer                                   This function reads consecutive lines of text from the input file  fp , until either the end of file is reached, or    the end of the array of pointers is reached     Each input line is saved stored in dynamic storage and it is accessed referenced by a pointer of the p text array     That is, p text 0  points to the FIRST input line, 11 p text 1  points to the SECOND input line, and so on     The function returns  1) The array of pointers  p text  that point to each input line  112 ) The number of lines read, if all went well, otherwise 1  3) Return  1, if an error has occurred  175 176 177 178 int int int char char int i  nlines  line lng  line  MAX LINE LNG)   p  return val     Loop index     Line counter of lines read     Length of current input line     Local storage for the current line of text just read     Pointer to dynamically allocated storage     Value returned by the function  179 180 181 182 183 184 185 186 187 188 189 190 191 192 nlines return val   0     So far, all is well  while ( (fgets(line, MAX LINE LNG, fp)    NULL)    (return val    0))   i   0  while linelul    NUL)    (i 232 233 return  void write text reverse(char  p text  ,    Array of pointers to lines of input  int nlines)    Number of input lines pointed to referenced by array of pointers                                             This subroutine prints all input lines of text referenced by the  p text  array of pointers     Input lines are printed in the REVERSE order that they were read in     A suitable heading is printed to indicate the nature of the output     The report message() routine is called to output an appropriate  MSG INFO  message if there are no lines of text to print       234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 return  void report message(char msg  MAX MSG NUM (MAX MSG LNG),    Message buffer enum msg kind type msg kind )    Message kind, i e  kind of message  INFO, WARNING, or ERROR     EEEEEEEEEEEEEEEEEEEEEEE                             Given the 2D message buffer msg       and the type kind of message to print, this routine prints the message in a  standardized  format     Each message type has a unique prefix which is printed with the first message line to serve as a  label  for the message, and each    subsequent message line, if present, is indented accordingly     Each line of the message buffer is printed sequentially, starting with the first line (index   0), and ending when either the    last line of the buffer is printed, or the first NULL line is encountered    static char pname'     report message      sub program name  261 263 264 register int i  static char info prefix  static char warn prefix  static char err prefix  static char indent          MSG           WRN            ERR     printf(NL)     Print a blank line to separate the message from previous output  266 267 268 269 270    Switch on  msg kind  to determine which message prefix to output  271 272 273 switch (msg kind)   case MSG INFO  printf(info prefix)  break  D case MSG WARNING  printf(warn prefix)  break     A  Switch  statement is the ONLY place where a  break  is allowed because it    is part of the  Switch Syntax   278 279 case MSG ERROR  printf(err prefix)  break  280 281 282 283 284 285 286 287 288 default     Always check for an  un handled  msg kind  printf(         INTERNAL Error in function   s  , pname )  printf(         Invalid msg kind     d   , msg kind)  break     Output the contents of the  msg  buffer, starting with the first message line     NOTE  The first message line is ALWAYS output because message buffer is    guaranteed to contain at least one message line  289 290 msg  0   MAX MSG LNG  1)   (NUL  291 292 293 294    Null last position of message, in case message is longer than buffer, or    message is not nulled  Can never be too trustworthy when it comes to handling    strings in  C   295 printf(  s  , msg 0 )     Always print first message  295 296 297 printf(  s  , msg 0 )     Always print first message  for (int j 0  j  include  include  include 49    Define machine independent TRUE and FALSE values 51 54  ifdef TRUE  undef TRUE  undef FALSE  endif  define TRUE (1  1)  define FALSE (O  1) ' '         GLOBAL MACRO DEFINITIONS      define NL        New Line string  define NL ' '    New Line char  define LF        Line Feed string  define cLF    Line Feed char  define CR        Carriage Return string  define CCR '     Carriage Return char  define CRLF        Carriage Return Line Feed  define LFCR        Line Feed Carriage Return  define FF    Form Feed  define NUL  10     Null string  define CNUL    Null character  define BLK    Single Blank string  define CBLK    Single Blank character   f   define cuScore    define UScore    define CZERO TO'    Underscore character    Underscore string     Single ZERO character  define HTAB  define cHTAB  define VTAB  define CVTAB  define ESC   t   It'   v   Iv'   x1B     Horizontal Tab string    Horizontal Tab character    Vertical Tab string    Vertical Tab character    Escape string  hex(1B)   dec(27)  84          GLOBAL STATEMENT FUNCTION DEFINITIONS      define F MIN (V1, V2) (((v1) (v2))  (v1)  (v2))  define ZF MIN (v1, V2) (F MAX( , (F MIN( (v1), (v2)))))  define ZF(v) (F MAX(0, (v)))  define F NOT(v) (((v)    TRUE)   FALSE  TRUE),  define F ABS(v) (((V)    0 )  (v) ( (v))),    Return the less of v1 and v2    Return the greater of v1 and v2    Like F MIN, but lower bounds the result at ZERO    Lower bounds the value  V  at ZERO     Logical Negation     Absolute value         GLOBAL Constants           define MAX NUM LINES 500  define MAX LINE LNG 81    Max  number of lines     Max  length of line  One extra byte for terminating null  96  define MAX MSG NUM 10  define MAX MSG LNG 133    Number of message lines     Length of a message string  Max of 132 chars  1 for terminating null byte          GLOBAL VARIABLES and STRUCTURE DEFINITIONS   char msa IMAX MSG NUM) (MAX MSG LNG     Message buffer  Can hold MAX MSG NUM messages, each MAX MSG LNG chars long  98 99 100 101 102 103 104 105 106 enum msg kind type(MSG INFO, MSG WARNING, MSG ERROR      MESSAGE type or kind of message  (Enumerated Type)    Information     Warning  Error          GLOBAL FUNCTION PROTOTYPES     int read text (char  p text  , FILE  fp )  108 109 void write text inorder(char  p text(), int nlines)  112 void write text reverse(char  p textil, i nt nlines)  114 115 116 117 118 void report message (char enum msg  MAX MSG NUM   MAX MSG LNG), msg kind type msg kind )  120 121 int main(int argc, char  argv  )         setbuf(stdout, NULL)  122 123 int nlines  int return val     No  of lines read from input file     Main program return value to os (Operating System)  125 126 127 char  p text  MAX NUM LINES   128 129    Array of pointers to  char     Have a total number of MAX NUM LINES pointers     Input file name     Input file pointer  130 char filename in      text txt   FILE  fp in   NULL  131 return val         Assume all is well  132 133 134 135    Initialize  msg  message buffer by filling entire buffer with NULLS  for (int i 0  i 0)   147 write text inorder(p text, nlines)  write text reverse(p text, nlines)     Call subprogram to print in order     Call subprogram to print in reverse order  149  else      Handle excessive number of input lines  Indicated by  nlines    1  sprintf(msg 0 ,   s ,  Input file too large to process  )  sprintf(msg 1 ,  s d  ,  Max  number of input lines allowed    , MAX NUM LINES)  sprintf(msg 2 ,   s ,  Program Execution Aborted  )  report message(msg, MSG ERROR)  return val    1     Set up to return ERROR condition ( 1) to os  157 158 fclose(fp in)     Close input file  here  since it was opened successfully  159 160 161 162 printf( Program Terminated  Have a great day  )  163 return (return val)     Return to os  164 165 166 167 168 169 170 171 172 173 174 int read text(char  p text  ,    Array of pointers to char  FILE  fp )     Input file pointer                                   This function reads consecutive lines of text from the input file  fp , until either the end of file is reached, or    the end of the array of pointers is reached     Each input line is saved stored in dynamic storage and it is accessed referenced by a pointer of the p text array     That is, p text 0  points to the FIRST input line, 11 p text 1  points to the SECOND input line, and so on     The function returns  1) The array of pointers  p text  that point to each input line  112 ) The number of lines read, if all went well, otherwise 1  3) Return  1, if an error has occurred  175 176 177 178 int int int char char int i  nlines  line lng  line  MAX LINE LNG)   p  return val     Loop index     Line counter of lines read     Length of current input line     Local storage for the current line of text just read     Pointer to dynamically allocated storage     Value returned by the function  179 180 181 182 183 184 185 186 187 188 189 190 191 192 nlines return val   0     So far, all is well  while ( (fgets(line, MAX LINE LNG, fp)    NULL)    (return val    0))   i   0  while linelul    NUL)    (i 232 233 return  void write text reverse(char  p text  ,    Array of pointers to lines of input  int nlines)    Number of input lines pointed to referenced by array of pointers                                             This subroutine prints all input lines of text referenced by the  p text  array of pointers     Input lines are printed in the REVERSE order that they were read in     A suitable heading is printed to indicate the nature of the output     The report message() routine is called to output an appropriate  MSG INFO  message if there are no lines of text to print       234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 return  void report message(char msg  MAX MSG NUM (MAX MSG LNG),    Message buffer enum msg kind type msg kind )    Message kind, i e  kind of message  INFO, WARNING, or ERROR     EEEEEEEEEEEEEEEEEEEEEEE                             Given the 2D message buffer msg       and the type kind of message to print, this routine prints the message in a  standardized  format     Each message type has a unique prefix which is printed with the first message line to serve as a  label  for the message, and each    subsequent message line, if present, is indented accordingly     Each line of the message buffer is printed sequentially, starting with the first line (index   0), and ending when either the    last line of the buffer is printed, or the first NULL line is encountered    static char pname'     report message      sub program name  261 263 264 register int i  static char info prefix  static char warn prefix  static char err prefix  static char indent          MSG           WRN            ERR     printf(NL)     Print a blank line to separate the message from previous output  266 267 268 269 270    Switch on  msg kind  to determine which message prefix to output  271 272 273 switch (msg kind)   case MSG INFO  printf(info prefix)  break  D case MSG WARNING  printf(warn prefix)  break     A  Switch  statement is the ONLY place where a  break  is allowed because it    is part of the  Switch Syntax   278 279 case MSG ERROR  printf(err prefix)  break  280 281 282 283 284 285 286 287 288 default     Always check for an  un handled  msg kind  printf(         INTERNAL Error in function   s  , pname )  printf(         Invalid msg kind     d   , msg kind)  break     Output the contents of the  msg  buffer, starting with the first message line     NOTE  The first message line is ALWAYS output because message buffer is    guaranteed to contain at least one message line  289 290 msg  0   MAX MSG LNG  1)   (NUL  291 292 293 294    Null last position of message, in case message is longer than buffer, or    message is not nulled  Can never be too trustworthy when it comes to handling    strings in  C   295 printf(  s  , msg 0 )     Always print first message  295 296 297 printf(  s  , msg 0 )     Always print first message  for (int j 0  j

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The text file text.txt, is used by the program as the source of data for the project. Compile and run the program, as given, to

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