练习

Console.Write("请输入月份:");

            int a = int.Parse(Console.ReadLine());

            Console.Write("请输入几号:");

            int b = int.Parse(Console.ReadLine());

            int a1 = 31, a2 = 28, a3 = 31, a4 = 30, a5 = 31,

            a6 = 30, a7 = 31, a8 = 31, a9 = 30, a10 = 31, a11 = 30;

        

                    switch (a)

                    {

                        case 1:

                            Console.WriteLine("第" + b.ToString() + "天");

                            break;

                        case 2:

                            Console.WriteLine("第" + (a1 + b).ToString() + "天");

                            break;

                        case 3:

                            Console.WriteLine("第" + (a1 + a2 + b).ToString() + "天");

                            break;

                        case 4:

                            Console.WriteLine("第" + (a1 + a2 + a3 + b).ToString() + "天");

                            break;

                        case 5:

                            Console.WriteLine("第" + (a1 + a2 + a3 + a4 + b).ToString() + "天");

                            break;

                        case 6:

                            Console.WriteLine("第" + (a1 + a2 + a3 + a4 + a5 + b).ToString() + "天");

                            break;

                        case 7:

                            Console.WriteLine("第" + (a1 + a2 + a3 + a4 + a5 + a6 + b).ToString() + "天");

                            break;

                        case 8:

                            Console.WriteLine("第" + (a1 + a2 + a3 + a4 + a5 + a6 + a7 + b).ToString() + "天");

                            break;

                        case 9:

                            Console.WriteLine("第" + (a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + b).ToString() + "天");

                            break;

                        case 10:

                            Console.WriteLine("第" + (a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + b).ToString() + "天");

                            break;

                        case 11:

                            Console.WriteLine("第" + (a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10 + b).ToString() + "天");

                            break;

                        case 12:

                            Console.WriteLine("第" + (a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a10 + a11 + b).ToString() + "天");

                            break;

                            Console.ReadLine();

 

 

//100节楼梯，0-49节 是本身的分数
//从 50以后 每关10分
//输入所在的节数，求现在的分数
Console.Write("求输入楼梯节数:");
int n = int.Parse(Console.ReadLine());
int m = 0;
if(n<=100&n>=1)
for (int i = 1; i <= n; i++)
{
if (n <= 49 && n >= 1)
{
m = m + i;
}
else if (n <= 50 && n >= 100)
{
m = m + 10;
}

}
else
{
Console.WriteLine("输入有误");
}
Console.WriteLine(+m);
Console.ReadLine();