Question

How to use constructor overloading in C++

Answer 1

#include <iostream>

class Rectangle {
public:
    int x, y; 
    
    Rectangle();
    Rectangle(int, int);
    
    void Show();
};
    
Rectangle::Rectangle() { x = 30; y = 14; }
Rectangle::Rectangle(int a, int b) { x = a; y = b; }

void Rectangle::Show() {
    std::cout << x << " " << y;
}

int main() {
    Rectangle r1;
    r1.Show();
    
    std::cout << "\n";
    
    Rectangle r2(5, 9);
    r2.Show();
}




/*
run:

30 14
5 9

*/

 

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