Write a program in C++, to find if the given year is leap year or not using if else control structure.

#include <iostream>

using namespace std;

int main()

 {

    int year;

    cout << "Enter a year to check: ";

    cin >> year;

    if (year % 4 == 0) 

{

        if (year % 100 == 0) 

{

            if (year % 400 == 0)

                cout << year << " is a leap year.";

            else

                cout << year << " is not a leap year.";

        }

        else

            cout << year << " is a leap year.";

    }

    else

    cout << year << " is not a leap year.";

    return 0;

}

Output::