帮忙解决一个问题。。。。 - 编程论坛

#2

南国利剑2010-06-07 23:09

那你就在主函数里输入m和h的值，然后调用的时候传递给构造函数就可以。

至于教程，你百度一下应该有。

#3

marenshi2010-06-09 00:11

#include <iostream.h>
class CMyRectangle
{
public:
    CMyRectangle(double w,double h)
    {
        width=w;
        heigh=h;
        cout<<"The object is created!"<<endl;
    }
    ~CMyRectangle()
    {
        cout<<"The object is destroyed"<<endl;
    }
    void get_data()//在此加输入函数
    {cin>>width>>heigh;
    }
    double CalArea();
    double CalPerimeter();
private:
    double width;
    double heigh;
};
double CMyRectangle::CalArea()
{
    return width*heigh;
}
double CMyRectangle::CalPerimeter()
{
    return (width+heigh)*2;
}
int main()
{
    CMyRectangle myerctangle(12.2,9.8);
    cout<<"the mianji is:"<<myerctangle.CalArea()<<endl;
    cout<<"the zhouchang is"<<myerctangle.CalPerimeter()<<endl;
    myerctangle.get_data();//在此调用
        cout<<"the mianji is:"<<myerctangle.CalArea()<<endl;//再次调用
    cout<<"the zhouchang is"<<myerctangle.CalPerimeter()<<endl;//再次调用
    return 0;
}

#4

2010-06-09 12:58

int main()
{
    double w,h;
    cin>>w>>h;
    CMyRectangle myerctangle(w,h);
    cout<<"the mianji is:"<<myerctangle.CalArea()<<endl;
    cout<<"the zhouchang is"<<myerctangle.CalPerimeter()<<endl;
    return 0;
}