1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6  7 namespace ConsoleApplication1suijishu 8 { 9     class Program10     {11         static void Main(string[] args)12         {13             Random rand = new Random();14             int irand = 0;15             double drand = 0;16             for (int i = 0; i < 100; i++)17             {18                 irand = rand.Next(10,10);//随机0-10之间整数19                 Console.Write(irand+" ");20                 if (i%10==0 && i>9)21                 {22 23                     Console.WriteLine();24                 }25                 26             }27             Console.WriteLine("---------------------------");28             for (int i = 0; i < 100; i++)29             {30                 drand = rand.NextDouble();//随机0-1之间double数31                 Console.Write(drand+"   ");32                 if (i % 10 == 0 && i > 9)33                 {34 35                     Console.WriteLine();36                 }37             }38             Console.WriteLine("---------------------------");39             for (int i = 0; i < 100; i++)40             {41                 drand = rand.NextDouble();42                 Console.Write(Math.Round( drand,4)+"    ");//保留4位小数点后数字43                 if (i % 10 == 0 && i > 9)44                 {45 46                     Console.WriteLine();47                 }48             }49             Console.WriteLine("---------------------------");50 51             rand = new Random(System.DateTime.Now.Millisecond);52             for (int i = 0; i < 100; i++)53             {54                 drand = rand.NextDouble();55                 Console.Write(Math.Round(drand, 4) + "    ");//保留4位小数点后数字56                 if (i % 10 == 0 && i > 9)57                 {58 59                     Console.WriteLine();60                 }61             }62 63             Console.ReadKey();64         }65     }66 }

程序所在路径：