为此,我们将获得一个圆的半径。我们的任务是找到给定半径的半圆的面积和周长。
#include <iostream> using namespace std; //计算半圆的面积 float area(float r) { return (0.5)*(3.14)*(r * r); } //计算周长 float perimeter(float r) { return (3.14)*(r); } int main() { int r = 10; cout << "The Area of Semicircle: "<< area(r) << endl; cout << "The Perimeter of Semicircle: "<< perimeter(r) << endl; return 0; }
输出结果
The Area of Semicircle: 157 The Perimeter of Semicircle: 31.4