Console.WriteLine("请输入年龄");

int year = Convert.ToInt32(Console.ReadLine());

if (year >= 18)

{ Console.WriteLine("可以查看"); }

if (year < 10)

{ Console.WriteLine("不允许查看"); }

Console.ReadKey();

if (year >= 10 && year < 18)

{ Console.WriteLine("是否继续查看（yes、no）");

string a = Console.ReadLine();

if (a == "yes")

{ Console.WriteLine("请查看"); }

if (a == "no")

{ Console.WriteLine("退出,你放弃查看"); }

Console.ReadKey();

图片发自简书App