c＋＋求三个圆柱体体积

以下是C++求三个圆柱体体积的代码示例：

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

double Cylinder(double r, double h); // 函数声明

int main() {
    double radius1, height1, radius2, height2, radius3, height3;
    cout << "请输入第一个圆柱体的半径和高:\n";
    cin >> radius1 >> height1;
    cout << "请输入第二个圆柱体的半径和高:\n";
    cin >> radius2 >> height2;
    cout << "请输入第三个圆柱体的半径和高:\n";
    cin >> radius3 >> height3;

    double volume1 = Cylinder(radius1, height1);
    double volume2 = Cylinder(radius2, height2);
    double volume3 = Cylinder(radius3, height3);

    cout << "第一个圆柱体的体积为：" << volume1 << endl;
    cout << "第二个圆柱体的体积为：" << volume2 << endl;
    cout << "第三个圆柱体的体积为：" << volume3 << endl;
}

// 计算圆柱体体积的函数
double Cylinder(double r, double h) {
    return r * r * M_PI * h;
}