2019-01-02

从键盘上输入10个整数，合法值为1，2或3，不是这3个数则为非法数字。试编程统计每个整数和非法数字的个数。程序运行结果如图所示

Console.WriteLine("请输入10个数字");

int[] nums = new int[10];

int[] count = new int[4];

for (int i = 0; i < nums.Length; i++)

{

Console.Write("请输入第{0}个数字", i + 1);

nums[i] = Convert.ToInt32(Console.ReadLine());

switch (nums[i])

{

case 1:

count[0] += 1;

break;

case 2:

count[1] += 1;

break;

case 3:

count[2] += 1;

break;

default:

count[3] += 1;

break;

}

}

Console.WriteLine("数字1的个数为{0}",count[0]);

Console.WriteLine("数字2的个数为{0}", count[1]);

Console.WriteLine("数字3的个数为{0}", count[2]);

Console.WriteLine("非法数字为{0}", count[3]);

} catch

{

Console.WriteLine("你输入的有误，程序退出。");

}

Console.ReadKey();