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871天前#include "stdafx.h" |
#include"iostream" |
using namespace std; |
const double pi = 3.14; |
int main() |
{ |
cout << "Input shape" << endl; |
cout << "if circle, input c, if rectangle input r; if square input s" << endl; |
char shape; |
cin >> shape; |
switch (shape) |
{ |
case 'c': double r; |
cout << "input radius" << endl; |
cin >> r; |
cout << " circle area=" << r*r*pi << endl; |
break; |
case 'r': double len, wid; |
cout << "input length and width" << endl; |
cin >> len >> wid; |
cout << "rectangel=" << (len + wid) * 2 << endl;//补充矩形面积计算 |
break; |
case 's':cout << "input length" << endl; |
cin >> len; |
cout << "square=" << len*len<< endl;//补充正方形面积计算 |
break; |
default: cout << "input error!" << endl; |
break; |
} |
return 0; |
} |
