Hitung Luas Persegi Panjang Menggunakan C++

file.cpp

#include "stdio.h"
#include "iostream"

using namespace std;

int main()
{
    int luas = 0, panjang = 0, lebar = 0;

    printf("%s" "\n", "Calculate the area of ​​a rectangle");

    cout << "Input long: ";
    cin >> panjang;
    
    cout << "Input short: ";
    cin >> lebar;

    if(panjang != 0 && lebar != 0)
    {
        luas = panjang * lebar;
        cout << "Long = " << luas << "\n";
    }else
    {
        cout << "Error long || short cannot be empty!";
    }

    return 0;
}