C#计算int数组中值的平均值 [英] C# calculate mean of the values in int array

问题描述

当我尝试在int数组中打印平均值时出现什么问题，并且它打印出的内容与我所拥有的值完全不同.

What's the problem when I try to print the average of the values in int array and it prints out something totally different as many times as I have values.

int[] numbers;
numbers = new int[5];
Console.WriteLine("give five integer numbers:");
numbers[0] = Int32.Parse(Console.ReadLine());
numbers[1] = Int32.Parse(Console.ReadLine());
numbers[2] = Int32.Parse(Console.ReadLine());
numbers[3] = Int32.Parse(Console.ReadLine());
numbers[4] = Int32.Parse(Console.ReadLine());
int sum = 0;

foreach (int x in numbers) {
    sum += x;
    int aver = sum / numbers.Length;  
    Console.WriteLine("average: {0}",aver);
}

推荐答案

平均值应该在循环范围之外:

Average should be outside the loop:

foreach (int x in numbers) 
{
   sum += x;
}

int aver = sum / numbers.Length;  
Console.WriteLine("average: {0}",aver);

或使用Linq扩展方法:

Console.WriteLine("average: {0}", numbers.Average());

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