Codechef Problems: Independence Day (INDDAY)

 Problem Statement: 

https://www.codechef.com/problems/INDDAY

Solution: 

Given, X : today's date 

to find, how many days remaining to independence day or it has already passed 

condition 1 : X <= 15 i.e., independence day has not passed

output: 15 - X 

condition 2 : X > 15 i.e., independence day has passed

output: -1 

Code Solution: 

#include <bits/stdc++.h>

using namespace std;

int main() {

    int x;

    cin >> x;

    if (x <= 15) {

        cout << 15 - x << endl;

    } else {

        cout << -1 << endl;

    }

    return 0;

}