 This is my program using exit function when user enter Zero it will exit  otherwise the square of number

#include<stdio.h>
#include<stdlib.h>
int main()
{
	int n, square;
	while(1) {
	printf("Enter the number:");
	scanf("%d" ,&n);
	if (n==0)
	{
		printf(" your entered number is zero!.\n");
	
	exit(0);
	} else {
	
		square=n*n;
		printf("square of the number %d is %d\n" ,n,square);
	}
	}
	return 0;
}
	

	