Realloc copy operations

gistfile1.txt

Total op = 10000
Number of copy operations = 12


Total op = 1000000
Number of copy operations = 5941

Source Code

#include <stdio.h>
#include <stdlib.h>

const int REALLOC_SIZE = 10000;
const int IT = 1000000;

int main(){
	void* ptr=NULL;
	void* last;
	int n=0;
	int i;
	for(i=1;i<IT;i++){
		last = ptr;
		ptr = realloc(ptr,REALLOC_SIZE*i);
		if(last!=ptr) n++;
	}
	printf("Total op = %d\nNumber of copy operations = %d\n",IT,n);
	return(0);
}