public static UserBase CreateOperate(string operate) { UserBase oper = null; switch (operate) { case "+": oper = new UserAdd(); break; case "-": oper = new UserSub(); break; case "*": oper = new UserMul(); break; case "/": oper = new UserDiv(); break; } return(oper); }
public static UserBase CreateOperate(string operate) { UserBase oper = null; switch (operate) { case "+": oper = new UserAdd(); break; case "-": oper = new UserSub(); break; case "*": oper = new UserMul(); break; case "/": oper = new UserDiv(); break; } return oper; }