中間試験1
1349 ワード
/*
*
* Copyright (c)2013,
* All rightsreserved.
* :Rectangle.cpp
* :
* :2013 5 29
* : v1.0
* :
* :
* :
* :
#include<iostream>
using namespace std;
class Rectangle
{
public:
Rectangle(){x1=0;y1=0;x2=0;y2=0;}//
Rectangle(double X1,double Y1,double X2,double Y2):x1(X1),y1(Y1),x2(X2),y2(Y2){}
Rectangle(const Rectangle&p){x1=p.x1;y1=p.y1;x2=p.x2;y2=p.y2;}
void input(); // x,y
void output();//
private:
double x1;
double y1;
double x2;
double y2;
};
void Rectangle::input()
{
cin>>x1>>y1>>x2>>y2;
}
void Rectangle::output()
{
cout<<(x2-x1)*(y2-y1)<<endl;
}
int main()
{
Rectangle p1;
p1.input();
p1.output();
Rectangle p2(p1);
p2.output();
Rectangle p3(1,1,6,3);
p3.output();
return 0;
}
*心得:戻り値の有無に注意!