C#-基本結構

一、IF結構

if(chinese==100 && music>70)            {               Console.WriteLine("優秀");             }            Console.ReadKey();

 if (score >= 90)            {                str="A";      //Console.WriteLine("A");              }            else if (score >= 80)            {                str = "B";    //Console.WriteLine("B");            }            else if (score >= 70)            {                str = "C";   //Console.WriteLine("C");            }            else if (score >= 60)            {                str = "D";    //Console.WriteLine("D");8            }            else            {                str = "E";    //Console.WriteLine("E");            }            Console.WriteLine(str);

二.For迴圈

 for (int j = 1; j <=9; j++)            {                for (int i = 1; i <=9; i++)                {                    Console.Write("{0}*{1}={2}\t", i, j, i * j);                }                Console.WriteLine();            }

三.While迴圈

<1>

 while (student <= 200000)//到多少年達到20萬人            {                student *= 1.25; //每年增長25%                year++;            }

     do       {            Console.WriteLine("請輸入帳號");            name = Console.ReadLine();            Console.WriteLine("請輸入密碼");            pwd = Console.ReadLine();        } while (name != "admin" || pwd != "88888");

<2>Break（）

用於迴圈，中止迴圈

<3>continue()

跳轉，具體跳轉的代碼根據實際情況而定