// C4_9.cpp : Defines the entry point for the console application.
// while迴圈範例

#include "stdafx.h"
#include <iostream>
using namespace std;


int main(int argc, char* argv[])
{
  double data = 0.0;
    double total = 0.0;
    int i = 0;
	double sum = 0.0;
    char status = 'y';    //status = 'y'
  
    while(status == 'y')    
    {
      cout << endl
          << "請輸入一個數值 ? ";
      cin >> data;
      ++i ;
      sum += data;
  
      cout << endl
      << "是否要輸入其他的值（按 n 跳出）";
       cin >> status;
    }
    cout << endl
        << " 共輸入 " << i
        << "個值加總為 " << sum << " 平均值為 " << sum / i 
        << endl;
return 0;
}