C#练习

switch练习

            Console.WriteLine("请输入你的成绩：");
            int sorce = Convert.ToInt32(Console.ReadLine());
            switch (sorce / 10)
            {
                case 10:
                case 9: Console.WriteLine("A");
                    break;
                case 8: Console.WriteLine("B");
                    break;
                case 7: Console.WriteLine("C");
                    break;
                case 6: Console.WriteLine("D");
                    break;
                default: Console.WriteLine("E");
                    break;
            }
            Console.ReadKey();

while循环练习

int i = 0;
            while (i < 100)
            {
                Console.WriteLine("Hello World！");
                i++;
            }
            Console.ReadKey();

for循环练习

            for (int i = 0; i < 100; i++)
            {
                Console.WriteLine("hello world！");
            }
            Console.ReadKey();

do while循环练习

int i = 0;
            do{
                Console.WriteLine("我是do while 循环！");
                i++;
            }while(i<10);
            Console.ReadKey();