View Code of Problem 3696

#include<stdio.h>
#include<math.h>
int main(){
	int n;
	while(scanf("%d",&n)!=EOF){
		if(n==0)
		printf("0\n");
		else{
		
		printf("%lld\n",s);
	}
}
} 
/*
Main.c: In function 'main':
Main.c:10:19: error: 's' undeclared (first use in this function)
   printf("%lld\n",s);
                   ^
Main.c:10:19: note: each undeclared identifier is reported only once for each function it appears in
*/