f0203.cpp

来自「it is a usefull thing」· C++ 代码 · 共 21 行

//=====================================
// f0203.cpp
// 拆成两个函数
//=====================================
#include<iostream>
using namespace std;
//-------------------------------------
void sphere();
//-------------------------------------
int main(){
  sphere();
}//------------------------------------
void sphere(){
  double radius;
  cout<<"Please input radius: ";
  cin >>radius;
  if(radius < 0) return;
  cout<<"The result is "<<radius*radius*3.14*4<<"\n";
}//====================================