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#2
rjsp2017-10-16 08:43
 程序代码：class myrect { public: myrect( int x, int y, int width, int height ) : x_(x), y_(y), width_(width), height_(height) { } double x() const { return x_; } double y() const { return y_; } double area() const { return height_ * width_; } int girth() const { return 2*width_ + 2*height_; } void inflate( int n ) { width_ *= n; height_ *= n; } void reduce( int p ) { width_ /= p; height_ /= p; } void move( int xoffset, int yoffset ) { x_ += xoffset; y_ += yoffset; } private: int x_, y_; int width_, height_; }; #include <iostream> using namespace std; int main( void ) { myrect rect(100, 100, 50, 20); cout << rect.area() << endl; cout << rect.girth() << endl; rect.inflate(3); cout << "increase " << 3 << ": " << rect.area() << endl; rect.reduce(2); cout << "reduce " << 2 << ": " << rect.area() << endl; rect.move( 30, 40 ); cout << "x=" << rect.x() << ", y=" << rect.y() << endl; return 0; } |
程序代码：// ConsoleApplication26.cpp : 定义控制台应用程序的入口点。
//
#include "stdafx.h"
#include<iostream>
#include<cstdlib>
using namespace std;
class myrect
{
public:
double getArea() //声明面积
{
return height*width;
}
int getgirth() //声明周长
{
return height * 2 + width * 2;
}
myrect(int x, int yl, int h, int w)
{
this->x = x;
y = yl;
height = h;
width = w;
}
void inflate(int n)//放大倍数
{
height *= n;
width *= n;
}
void reduce(int p)//缩小倍数
{
height = height / p;
width = width / p;
}
void move(int xm, int ym)//移动
{
x += xm;
y += ym;
}
private: //变量
int x, y;
int height, width;
};
int main()
{
int x, y;
myrect rect1(100, 100, 20, 50);
cout << rect1.getArea() << endl; //输出面积
cout << rect1.getgirth() << endl;//输出周长
rect1.inflate(3);//放大3倍
cout << "increase" << 3 << ":" << rect1.getArea() << endl;
rect1.reduce(2);//缩小2倍
cout << "reduce" << 2 << ":" << rect1.getArea() << endl;
rect1.move(30, 40);//x,y分别加的坐标
cout << "x,y" <<x<<y << endl;
system("pause");
return 0;
}
//
#include "stdafx.h"
#include<iostream>
#include<cstdlib>
using namespace std;
class myrect
{
public:
double getArea() //声明面积
{
return height*width;
}
int getgirth() //声明周长
{
return height * 2 + width * 2;
}
myrect(int x, int yl, int h, int w)
{
this->x = x;
y = yl;
height = h;
width = w;
}
void inflate(int n)//放大倍数
{
height *= n;
width *= n;
}
void reduce(int p)//缩小倍数
{
height = height / p;
width = width / p;
}
void move(int xm, int ym)//移动
{
x += xm;
y += ym;
}
private: //变量
int x, y;
int height, width;
};
int main()
{
int x, y;
myrect rect1(100, 100, 20, 50);
cout << rect1.getArea() << endl; //输出面积
cout << rect1.getgirth() << endl;//输出周长
rect1.inflate(3);//放大3倍
cout << "increase" << 3 << ":" << rect1.getArea() << endl;
rect1.reduce(2);//缩小2倍
cout << "reduce" << 2 << ":" << rect1.getArea() << endl;
rect1.move(30, 40);//x,y分别加的坐标
cout << "x,y" <<x<<y << endl;
system("pause");
return 0;
}
void move(int xm, int ym)//移动
{
x += xm;
y += ym;
}
rect1.move(30, 40);//x,y分别加的坐标
cout << "x,y" <<x<<y << endl;
这里有问题，但是不知道怎么改？