Mega Code Archive
Add a constructor to derived class
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#include <iostream>
#include <cstring>
using namespace std;
class Shape {
// private
double width;
double height;
public:
void display() {
cout << "Width and height are " << width << " and " << height << "\n";
}
// accessor functons
double getWidth() { return width; }
double getHeight() { return height; }
void setWidth(double w) { width = w; }
void setHeight(double h) { height = h; }
};
// Triangle is derived from Shape.
class Triangle : public Shape {
char style[20]; // now private
public:
// Constructor for Triangle.
Triangle(char *str, double w, double h) {
setWidth(w);
setHeight(h);
strcpy(style, str);
}
double area() {
return getWidth() * getHeight() / 2;
}
void showStyle() {
cout << "Triangle is " << style << "\n";
}
};
int main() {
Triangle t1("isosceles", 4.0, 4.0);
Triangle t2("right", 8.0, 12.0);
t1.showStyle();
t1.display();
cout << "Area is " << t1.area() << "\n";
t2.showStyle();
t2.display();
cout << "Area is " << t2.area() << "\n";
return 0;
}
Triangle is isosceles
Width and height are 4 and 4
Area is 8
Triangle is right
Width and height are 8 and 12
Area is 48
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