长方柱类

#include <iostream>
#include <cmath>
using namespace std;

class Volume
{
public:
    void setdata(double length,double width,double height);
    double area();
    double volume();

private:
    double length;
    double width;
    double height;
};
//下面定义需要的成员函数
void Volume::setdata(double l,double w,double h)//赋值
{
    length=l;
    width=w;
    height=h;
}
double Volume::area()//求面积
{
    return 2*(length*width+width*height+height*length);
}
double Volume::volume()//求体积
{
    return length*width*height;
}
int main()
{
    int t=3,i=1;
    while(t--)
    {
        double l,w,h;
        cout<<"请输入长方柱"<<i<<"的长: ";
        cin>>l;
        cout<<"请输入长方柱"<<i<<"的宽: ";
        cin>>w;
        cout<<"请输入长方柱"<<i<<"的高: ";
        cin>>h;
        Volume v;
        v.setdata(l,w,h);
        cout<<"长方柱"<<i<<"的表面积为: "<<v.area()<<endl;
        cout<<"长方柱"<<i<<"的体积为: "<<v.volume()<<endl;
        i++;
    }

    return 0;
}

输出结果：