How do I change my code so it prints out 29 characters words only. When I change the length to 29 it doesnt print anything, I also tried to print only 20 characters words it does print. But not 29 characters words.

string.h

#ifndef string_h

#define string_h

#include

//define the status

#define SUCCESS 1

#define FAILURE 0

typedef void * MY_STRING;

typedef int Status;

MY_STRING my_string_init_default(void)

{

char* hMy_string = (char*)malloc(7); //can store upto 7 characters

if(hMy_string != NULL)

hMy_string[0] = '\0' ; //initialize to empty string

return hMy_string;

}

MY_STRING my_string_init_c_string(const char* c_string)

{

int len = 0, i;

while(c_string[len] != '\0')

len++;

char* hMy_string = (char*)malloc(len + 1 );

for(i = 0; i <= len; i ++)

hMy_string[i] = c_string[i];

return hMy_string;

}

int my_string_get_capacity(MY_STRING hMy_string)

{

return sizeof(hMy_string); //returns the maximum allocated space for this handle

}

int my_string_get_size(MY_STRING hMy_string)

{

char* str = (char *) hMy_string;

int size = 0;

while(str[size] != '\0') //loop till we find a \0

size++;

return size;

}

int my_string_compare(MY_STRING hLeft_string, MY_STRING hRight_string)

{

int len1 = my_string_get_size(hLeft_string);

int len2 = my_string_get_size(hRight_string);

int i = 0;

char *s1 = hLeft_string, *s2 = (char*)hRight_string;

while ( i < len1 && i < len2)

{

//return a value when mismatch -1 when left is less than right, 1 if left is more than right

if(s1[i] < s2[i])

return -1;

else if(s1[i] > s2[i])

return 1;

else //correponding characters matched, moveon to next location

i++;

}

if(len1 == len2)

return 0;

else if(len1 < len2)

return -1;

else

return 1;

}

Status my_string_extraction(MY_STRING hMy_string, FILE *fp)

{

long start = 0, end = 0;

char ch;

int len ,capacity, i ;

while(!feof(fp))

{

ch = fgetc(fp);

if(ch== ' ' || ch == '\t' || ch == ' ' || ch == ' ') //whitespace characters

continue;

else

{

start = ftell(fp) - 1;

end = start + 1;

break;

}

}

if(end == 0)

return FAILURE;

while(!feof(fp))

{

ch = fgetc(fp);

end++;

if(ch== ' ' || ch == '\t' || ch == ' ' || ch == ' ') //whitespace characters

break;

}

len = (int)(end - start - 1);

if(len == 0)

return FAILURE;

capacity = my_string_get_capacity(hMy_string);

if(len >= capacity) //need to allocate more space?

{

hMy_string = realloc(hMy_string, len + 1); //should return this new address ?

}

fseek(fp, start, SEEK_SET);

char* str = (char*)hMy_string;

for(i = 0; i < len; i++)

str[i] = fgetc(fp);

str[i] = '\0';

return SUCCESS;

}

Status my_string_insertion(MY_STRING hMy_string, FILE *fp)

{

if(fprintf(fp,"%s", (char *)hMy_string)) //converted to char * //suppressed the warning here.... return SUCCESS;

else

return FAILURE;

}

void my_string_destroy(MY_STRING* hMy_string)

{

free(*hMy_string);

*hMy_string = NULL;

}

#endif /* string_h */

string_driver.c

#include #include // for original string functions...... #include "string.h"

int main(int argc, char* argv[])

{

MY_STRING hMy_string = NULL;

FILE *fp;

hMy_string = my_string_init_default();

fp = fopen("simple.txt", "r");

if(fp == NULL)

{

printf(" Could not open simple.txt ");

return -1;

}

while(my_string_extraction(hMy_string, fp))

{ if(strlen(hMy_string) == 29){ my_string_insertion(hMy_string, stdout); // if scanned string is of length 29 then only display it i.e,, send it to standard output...

printf(" "); //printing newline... }

/* if(fgetc(fp) == ' ')

{

printf("Found a space after the string ");

} */ }

my_string_destroy(&hMy_string); // Destroying scanned string.... fclose(fp); // close the file pointer...

return 0;

}