Check code

Hello there,
I’m trying to solve a easy question but I can’t solve it , I can’t figure it out.
problem : Add Natural Numbers : Problem Code: ADDNATRL

code :

#include <stdio.h>

int main () {
	int n;
	long long int sum = 0;
	for (int i=1; i<=n;i++) {
		sum = sum+i;
	return 0;

As you use %d as a format specifier for printing the sum of all natural numbers. this will be execute very well but there is a limit when the sum goes up from 65535 so the output will come in negative values
so by changing the format specifier to %lld from %d so it will give you the correct answer

in simple words, you use the wrong format specifier so use %lld you will get the output
as you can see the correct code in this picture