Question

I am a C++ programmer and I rarely have to deal with GCC “C”. I am currently converting some code from C++ to C for use with the GCC compiler.

In C++ I would use the following source code. Note that I would use a class for scope.

C++ Source

class Card {
public:
   enum Suit {
      Diamonds, Hearts, Clubs, Spades
   };
};

class Weapon {
public:
   enum WeaponType {
      Rocks, Clubs, Guns
   };
};

int main () {
 Suit a = Card::Clubs; 
 WeaponType b = Weapon::Clubs
}

In “C” with no classes and no way of differentiation between the two different “clubs” keywords. I get the following error message when trying to compile this

error C2365: ‘Clubs’ : redefinition; previous definition was
‘enumerator’

C Source

enum Suit {
    Diamonds, Hearts, Clubs, Spades
};

enum WeaponType {
    Rocks, Clubs, Guns
};

int main () {
 Suit a = Clubs; 
 WeaponType b = Clubs
}

So my questions are

• How do I declare two different enum in the same file with the same keyword?
• How do I add scope to the enum so I can assign different variables different enum with the same enum name?

Answer 1

Do it just like the old days:

enum Suit {
    ST_Diamonds, ST_Hearts, ST_Clubs, ST_Spades
};

enum WeaponType {
    WT_Rocks, WT_Clubs, WT_Guns
};

int main () {
 Suit a = ST_Clubs; 
 WeaponType b = WT_Clubs;
 return 0;
}