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USE OF realloc AND free FUNCTIONS

Posted By: Verina Fischer     Category: C Programming     Views: 4687

Write a program to store a character string in a block of memory space created by malloc and then modify the same to store a larger string.

Code for USE OF realloc AND free FUNCTIONS in C Programming

#include <stdio.h>
#include<stdlib.h>
#define NULL 0
main()
{
    char *buffer;
    /* Allocating memory */
if((buffer = (char *)malloc(10)) == NULL) { printf(“malloc failed.\n”); exit(1); } printf(“Buffer of size %d created \n”,_msize(buffer)); strcpy(buffer, “HYDERABAD”); printf(“\nBuffer contains: %s \n “, buffer); /* Realloction */
if((buffer = (char *)realloc(buffer, 15)) == NULL) { printf(“Reallocation failed. \n”); exit(1); } printf(“\nBuffer size modified. \n”); printf(“\nBuffer still contains: %s \n”,buffer); strcpy(buffer, “SECUNDERBAD”); printf(“\nBuffer now contains: %s \n”,buffer); /* Freeing memory */
free(buffer); } Output Buffer of size 10 created Buffer contains: HYDERABAD Buffer size modified Buffer still contains: HYDERABAD Buffer now contains: SECUNDERABAD
  
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Verina Fischer
Verina Fischer author of USE OF realloc AND free FUNCTIONS is from Frankfurt, Germany.
 
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