第3週任務2:干ばつの氷場を修理する
1215 ワード
/*
*
* Copyright (c)2013,
* All rightsreserved.
* :1.cpp
* :
* : 2013 03 15
* : v1.0
* : ,
* : main ,
*/
#include<iostream>
using namespace std;
class Circle
{
public:
void setRadius(double r);
double area();
double circumference();
private:
double radius;
};
void Circle::setRadius(double r)
{
radius=r;
}
double Circle::area ()
{
double PI=3.14,area=0;
area=PI*radius*radius;
return area;
}
double Circle::circumference()
{
double PI=3.14,circumference=0;
circumference=PI*2*radius;
return circumference;
}
int main()
{ double r;
cout<<" : ";
cin>>r;
Circle c;
c.setRadius(r);
cout<<" "<<20*c.area()+35*c.circumference()<<" 。"<<endl;
return 0;
}
実行結果: