using System;
namespace ConsolApplication1
{
class Program
{
static void Main(string[] args)
{
double v = 0;
Console.WriteLine("输入四个数");
for (int i = 0; i < 4; i++)
{
Console.Write("输入第 {0} 个数:", i + 1);
v += double.Parse(Console.ReadLine());
}
// 输出平均值
Console.WriteLine("平均值:{0}", v / 4);
}
}
}
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