2viii.cpp

来自「《C/C＋＋程序设计导论（第二版）》一书的程序源文件」· C++ 代码 · 共 17 行

// SUMAVE.CPP A program to sum and average a list
// of positive values
#include <iostream.h>
void main()
{	float number, sum = 0.0, count = 0.0, average;
	cout << "enter a list of pos. values (ending with -1.0): ";
	cin >> number;
	while (number > 0.0)
	{	sum = sum + number;
		count = count + 1.0;
		cin >> number;
	}
	cout << " sum is " << sum << endl;
	average = sum / count;
	cout << "The average is: " << average << endl;
}