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

int main(){
	char* x = NULL;
	unsigned long size = 1024;

	x = malloc(10);
	printf("long = %d\n", sizeof(unsigned long));

	while(1){
		x = realloc(x, size);
		
		if(x == NULL){
			printf("size = %lu\n", size);
			
			fflush(stdout);
			break;
		}
		else{
			x[size - 1] = 'a';
		}
		size *= 2;
	}    

	return 0;
}