Thread: How to define a variant record type in C

Dear Sir or Madam:
I am looking for help to define a variant record type in C. I am trying to map a Ada variant record data type into C data type, but I really dont know how to convert it into C. Here is the code
in Ada

Code:

type POWER is (GAS, STEAM, DIESEL, NONE);

   type VEHICLE (Engine : POWER) is
      record
         Model_Year : INTEGER range 1888..1992;
         Wheels     : INTEGER range 2..18;
         case Engine is
            when GAS    => Cylinders   : INTEGER range 1..16;
            when STEAM  => Boiler_Size : INTEGER range 5..22;
                           Coal_Burner : BOOLEAN;
            when DIESEL => Fuel_Inject : BOOLEAN;
            when NONE   => Speeds      : INTEGER range 1..15;
         end case;
      end record;

   Ford    : VEHICLE(GAS);
   Truck   : VEHICLE(DIESEL);
   Schwinn : VEHICLE(NONE);
   Stanley : VEHICLE(STEAM);

Any C code example or explaining how to define this kind of data structure in C is greatly appreciated.

DiepVien_007