2018-11-21作业1

using System; using System.Collections.Generic; using System.Linq; using System.Text; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { Console.WriteLine("请输入一个数字"); string str i=Console.ReadLine (); int i=Convert .ToInt32 (str i ); for (int a=0;a <=i;a++) { Console.WriteLine ("{0}+{1}={2}",a,i -a ，i )； } Console .ReadKey(); } } }