using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication1{    class Program{        static void Main(string[] args){            Console.WriteLine("Output the do{...} while() result");            int i = 1;            do {                Console.WriteLine("{0}",i++);}            while(i<=10);　            Console.WriteLine("Output the while(){...}  result");            int j = 1;            while(j<=10){                Console.WriteLine("{0}",j++);}            Console.WriteLine("Output for(;;)  result");            int k = 1;            for (k = 1; k <= 10; ++k){                Console.WriteLine("{0}",k);}            Console.ReadLine();}}}