p1_3.cpp

相当丰富的C++源码

/****************************************************
*    程序文件名: p1_3.cpp                           *
*    功能: 求三个数的平均值，演示C++简单I/O格式控制 * 
*****************************************************/
#include <iostream>  
#include <iomanip>            
using namespace std;
void main( )  
{    
	float num1, num2, num3;   //定义三个数    
	cout << "Please input three numbers:" ;
	cin >> num1 >> num2>>num3;
    cout<<setw(8)<<setprecision(12);
	cout << "The average of "<<num1<<" , "<<num2<<" and "<<num3;
	cout <<" is:"<<setw(20)<<(num1+num2+num3)/3<< endl;
}