#include <iostream>

using namespace std;

// Function that uses pass by value
int CalcArea(int length, int width)
{
    return length * width;
};

int main(void)
{
    int area;          // Create variable
    area = CalcArea(2, 2); // Pass by value
    
    cout << "area = " << area << endl; // Display area
    
    return 0;
}