check leap year in C++

 #include <iostream>

using namespace std;

// code to check if a year is leap year or not

int main(){

    int num;

    cout <<"enter a year : ";

    cin >> num;

    /*

    pseudocode:

    1. take year input from user.

    2. check if the year is leap year or not.

    leap year contains 4,8,2,0 in the end.

    3. print if yes : it is a leap year.

    if no, it's not a leap year.

    */  

    if(num % 4 == 0 ) { // checks if it is divisible by 4

        cout << "it is a leap year " << endl;

    } else {

        cout << " not a leap year ";

    }

    return 0;

}