Code on Dynamic Memory Allocation

/*Example program for reallocation*/
#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,”Bangalore”);
printf(“\nBuffer contains:%s\n”,buffer);
/*Reallocation*/
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,”Mysore”);
printf(“\nBuffer now contains:%s\n”,buffer);
/*freeing memory*/
free(buffer);
}