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- // classes example
- #include <iostream>
- using namespace std;
- class Rectangle {
- // instance variables
- int width, height;
- public:
- void set_values (int,int);
- int area() {return width*height;}
- };
- void Rectangle::set_values (int x, int y) {
- width = x;
- height = y;
- }
- int main () {
- Rectangle rect;
- rect.set_values (3,4);
- cout << "area: " << rect.area();
- return 0;
- }
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