Existing Code:

Existing Code:

Make sure your compile with -lreadline

#include  #include  char * pressKey(char *msg) { char *dummy=readline(msg); return dummy; } int main(int argc, char * argv[],char * envp[]) { int i; short numbers[]={0,1,2,3,4,5}; pressKey("Press return to see the addresses and contents of numbers: numbers[i]: "); fprintf(stdout," The base address of numbers is: %p ",numbers); for(i=0;i  Part III: Address Arithmetic (8 marks) Testing out of bound values Modify the example addressArithmetic3.c by creating an array of 5 values before numbers and a second array after numbers. Fill each with distinct values. Use #include to include the declaration of your datatype from Part I. (1 mark each except for g which is 2 marks) a. Display values from numbers using subscripts from 6 to 9. From which array (if either) do these values come from? b. Display values from numbers using subscripts from -1 to -5. From which array (if either) do these values come from? c. Modify your listing so that instead of using numbers[i] you use the pointer dereferencing notation *(numbers+i) to refer to elements of the array. Is there any change in output? d. Add the following declarations to your code after the 3 arrays: char *newStringl=(char * )alloca(100); char newString2[100]; struct yourDataType *iteml=(struct yourDataType *) calloc(sizeof (struct yourDataType),5); Print out the value of the pointers newStringl and new String2 Where in memory are they in relation to your arrays? Are they in the stack or the heap? e. Add values from -3 to +3 to both newStringl and newString2 and print out the values. Explain the results in terms of address arithmetic. f. Print out the values iteml and &iteml. Where are they in memory in relationship to your arrays? Explain the results in terms of address arithmetic? 8. Set up your program so that it uses both the function and the script mtrace to trace memory allocation. Describe what you did. What does the mtrace shell command tell you about the allocation and freeing of memory in the program? (2 marks)