c# - Threads creation -

please have @ following code. getting head around multithreading in c#. example taken manual. in main function try create 3 threads.

could please tell me how 2 threads (with errors) should created?
thank you!

using system;     using system.threading;       public static class monitormethodaccess {    private static int numericfield = 1;    private static object syncobj = new object();  public static object syncroot {     { return syncobj; } }  public static void incrementnumericfield() {     if (monitor.tryenter(syncobj, 250))     {         try         {             ++numericfield;         }                 {             monitor.exit(syncobj);         }      } }  public static void modifynumericfield(int newvalue) {     if (monitor.tryenter(syncobj, 250))     {         try         {             numericfield = newvalue;         }                 {             monitor.exit(syncobj);         }     } }  public static int readnumericfield() {     if (monitor.tryenter(syncobj, 250))     {         try         {             return (numericfield);         }                 {             monitor.exit(syncobj);         }     }      return (-1); } 

}

class program {     static void main(string[] args)     {         thread aaa = new thread(monitormethodaccess.incrementnumericfield);         thread bbb = new thread(monitormethodaccess.modifynumericfield(12);//error         thread ccc = new thread(monitormethodaccess.readnumericfield);//error          console.readkey();     } } 

thread bbb = new thread(()=>monitormethodaccess.modifynumericfield(12)); thread ccc = new thread(() => monitormethodaccess.readnumericfield()); 

but if want return values threads in third thread, should think use tasks