Question

Write two statements that each use malloc to allocate an int location for each pointer. Sample output for given program:

numPtr1 = 44, numPtr2 = 99
#include
#include
int main(void) {
int* numPtr1 = NULL;
int* numPtr2 = NULL;
/* Your solution goes here */
*numPtr1 = 44;
*numPtr2 = 99;
printf("numPtr1 = %d, numPtr2 = %d\\", *numPtr1, *numPtr2);
free(numPtr1);
free(numPtr2);
return 0;
}

Answer 1

#include <stdio.h>

#include <stdlib.h>

int main(void) {

int* numPtr1 = NULL;

int* numPtr2 = NULL;

/* Your solution goes here */

numPtr1 = (int *) malloc(10);

numPtr2 = (int *) malloc(20);

*numPtr1 = 44;

*numPtr2 = 99;

printf("numPtr1 = %d, numPtr2 = %d\\", *numPtr1, *numPtr2);

free(numPtr1);

free(numPtr2);

return 0;

}

Step-by-step explanation:

The C library malloc function is used to assign memory locations (in bytes) to variables. It accepts the size parameter and returns a pointer to the specified variable location.

The two malloc statements above assign two memory locations 10 and 20 to the numPtr1 and numPtr2 integer variables respectively.