Multiple states judged by bit operations in C #

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespacestatemachine{classProgram {Static voidMain (string[] args) {            //output decimal-binary ValueConsole.WriteLine (State.a +" - "+ Program.twonum (convert.tostring (State.a,2))); Console.WriteLine (state.b+" - "+ Program.twonum (convert.tostring (state.b,2))); Console.WriteLine (state.c+" - "+ Program.twonum (convert.tostring (state.c,2))); //Create a variable, add three states             ShortMark =0; Mark|=State.a; Mark|=state.b; Mark|=state.c; Console.WriteLine ("\ n"); Console.WriteLine ("Mark's value:"+ Mark +" - "+ Program.twonum (convert.tostring (Mark,2))); Console.WriteLine ("\ n Status Display"); //judge a value in a total of several States            if(Mark & State.a) >0) Console.WriteLine ("have a status of a"); if(Mark & state.b) >0) Console.WriteLine ("have the status of B"); if(Mark & state.c) >0) Console.WriteLine ("have the status of C"); if(Mark & STATE.D) >0) Console.WriteLine ("have the status of D");        Console.ReadLine (); }        //by default, the following 7 0         Public Static stringTwonum (strings) {stringtemp ="";  for(inti = s.length; I <8; i++) {Temp+="0"; } s= S.insert (0, temp); returns; }    }    /// <summary>    ///Status/// </summary>     Public classState { Public Static  ShortA =1<<0;  Public Static  ShortB =1<<1;  Public Static  ShortC =1<<2;  Public Static  ShortB1<<3;  Public Static  ShortE =1<<4; }}

Multiple states judged by bit operations in C #