#include <iostream>
using namespace std;
//malloc() and realloc 
//starting with a fixed size, //increase size realloc()
//simple_malloc_realloc1.cpp
int main()
{
 char buff[24];char * chptr1;
cout<<"\n Enter a string less tha 24 char \n\t" ; 
gets(buff);
//sanity check
if(strlen(buff)>24){ cout<<"\n oops ";
 cout<<" lenth was "<< strlen(buff);  exit(1);}
chptr1 = (char*) malloc(strlen(buff)+1);
//adding pointee 
strcpy(chptr1,buff);
//
if(chptr1==NULL){ cout<<"\n could not allocate "; free(chptr1);exit(1);} 
cout<<"\n allocated :\n\t "<<chptr1 <<endl; 
chptr1= (char*)realloc(chptr1,(strlen(buff)+14));
if(chptr1==NULL){ cout<<"\n could not allocate ";
  free(chptr1);exit(1);} 
strcat(chptr1," Good Job"); 
cout<<"\n realloc chptr1 :\n\t "<< chptr1; 
free(chptr1); 
     return 0;
}