定义一个矩形类(Rectangle),包含私有成员:长(length)、宽(width),
定义成员函数:
设置长度:void set_l(int l)
设置宽度:void set_w(int w)
获取长度:int get_l();
获取宽度:int get_w();
展示函数输出该矩形的周长和面积:void show()
#include <iostream>
using namespace std;
class Rectangle {
private:
int length;
int width;
public:
void set_l(int l) {
length = l;
}
void set_w(int w) {
width = w;
}
int get_l(){
return length;
}
int get_w(){
return width;
}
void show(){
int c = 2 * (length + width);
int area = length * width;
cout<<"Rectangle 周长 = "<<c<<endl;
cout<<"Rectangle 面积 = "<<area<<endl;
}
};
int main()
{
Rectangle rect;
rect.set_l(10);
rect.set_w(4);
cout<<"长 = "<<rect.get_l()<<endl;
cout<<"宽 = "<<rect.get_w()<<endl;
rect.show();
return 0;
}