// cs0218.cs: The type ('UserOperatorClass') must contain declarations of operator true and operator false // Line: 22 public class UserOperatorClass { public static UserOperatorClass operator & (UserOperatorClass u1, UserOperatorClass u2) { return new UserOperatorClass(); } // public static bool operator true (UserOperatorClass u) { // return true; // } // public static bool operator false (UserOperatorClass u) { // return false; // } public static void Main() { UserOperatorClass x = new UserOperatorClass(); UserOperatorClass y = new UserOperatorClass(); UserOperatorClass z = x && y; } }