Get the string representation of enums and iterate them in C using macros

enum_to_str.c

#include <stdio.h>

#define ENUM_GEN(ENUM)     ENUM,
#define STRING_GEN(STRING) #STRING,

// Add all your enums here
#define LIST_RET_T(RET_T) \
    RET_T(RET_SUCCESS)    \
    RET_T(RET_FULL)       \
    RET_T(RET_EMPTY)      \
    RET_T(RET_NULL)       \
    RET_T(RET_COUNT)

typedef enum RET_T 
{
    LIST_RET_T(ENUM_GEN)
}RET_T;

const char* RET_T_strings[] = 
{
    LIST_RET_T(STRING_GEN)
};

#define GET_RET_T_STR(e)  RET_T_strings[e]
#define FOREACH_RET_T(ret) for(ret = 0; ret < RET_COUNT; ret++)

int main(void)
{
    RET_T ret = RET_SUCCESS;

    FOREACH_RET_T(ret){
        printf("%s\n", GET_RET_T_STR(ret));
    }
}