ball.cpp

一个关于C++的多文件结构的示范

#include<iostream>
#include"obj.h"

void obj::ball(int x)
{using namespace std;
    cout<<"input the radius"<<endl;
	  cin>>a;
    	
	 cout<<"V="<<1/3.0*3.14*a*a*a<<endl;
     
     cout<<"S="<<1/4.0*3.14*a*a<<endl;     
	
}