编译原理 first集和follow集 first集和last集

using System; using System.Collections.Generic; using System.Text; namespace ConsoleApplication1 { class Program { static void Main(string[] args) {{ debug debug=new debug(); int s;//ding yi bian liang int j, i; string k;/*ding yi zi fu chuan*/ i= 2.3; j= j/4.4; debug.strshow("ss",a,i); k = "haha"+i+"heihei"; while(s<=1000){ if (s < 500 && i != 2.3) { s = i * j; } else { s = i++; } } Console.WriteLine("the key is" + s + "oh yes");/*the key*/ Console.WriteLine("the key is" + k); } } }