EnumString.c

// Taken from http://www.codeproject.com/Articles/10500/Converting-C-enums-to-strings

// File name: "EnumToString.h"
#undef DECL_ENUM_ELEMENT
#undef BEGIN_ENUM
#undef END_ENUM

#ifndef GENERATE_ENUM_STRINGS
    #define DECL_ENUM_ELEMENT( element ) element
    #define BEGIN_ENUM( ENUM_NAME ) typedef enum tag##ENUM_NAME
    #define END_ENUM( ENUM_NAME ) ENUM_NAME; \
            char* GetString##ENUM_NAME(enum tag##ENUM_NAME index);
#else
    #define DECL_ENUM_ELEMENT( element ) #element
    #define BEGIN_ENUM( ENUM_NAME ) char* gs_##ENUM_NAME [] =
    #define END_ENUM( ENUM_NAME ) ; char* GetString##ENUM_NAME(enum \
            tag##ENUM_NAME index){ return gs_##ENUM_NAME [index]; }
#endif

//------------- example header
// File name: "Days.h"
#if ( !defined(DAYS_H) || defined(GENERATE_ENUM_STRINGS) )

#if (!defined(GENERATE_ENUM_STRINGS))
    #define DAYS_H
#endif

#include "EnumToString.h"

///////////////////////////////
// The enum declaration
///////////////////////////////
BEGIN_ENUM(Days)
{
    DECL_ENUM_ELEMENT(sunday),
    DECL_ENUM_ELEMENT(monday),
    DECL_ENUM_ELEMENT(tuesday),
    DECL_ENUM_ELEMENT(wednesday),
    DECL_ENUM_ELEMENT(thursday),
    DECL_ENUM_ELEMENT(friday),
    DECL_ENUM_ELEMENT(saturday)
}
END_ENUM(Days)

//--------- example cpp
// File name: "EnumToString.cpp"
#ifdef _SECOND_TIME_IN_ENUM2STR_CPP
#define GENERATE_ENUM_STRINGS  // Start string generation
#endif
 
#include "Days.h"             
//#include "OtherEnum.h"
//#include "AnotherOne.h"

#ifdef _SECOND_TIME_IN_ENUM2STR_CPP
#undef GENERATE_ENUM_STRINGS   // Stop string generation 
#undef _SECOND_TIME_IN_ENUM2STR_CPP
#else
#define _SECOND_TIME_IN_ENUM2STR_CPP
#include "EnumToString.cpp"
#endif