how to stringify an enumeration type in C

enum_stringify_example.c

#include <stdio.h>
#include <stdio.h>

#define ENUM_BODY(name, value)              \
    name value,

#define AS_STRING_CASE(name, value)         \
    case name: return #name;

#define DEFINE_ENUM(name, list)             \
    typedef enum {                          \
        list(ENUM_BODY)                     \
    }name;

#define AS_STRING_DEC(name, list)           \
    const char* name##AsString(name n);


#define AS_STRING_FUNC(name, list)          \
    const char* name##AsString(name n) {    \
        switch (n) {                        \
            list(AS_STRING_CASE)            \
            default:                        \
            {                               \
                static char int_as_string[8];\
                snprintf( int_as_string, sizeof(int_as_string), "%d", n ); \
                return int_as_string;       \
            }                               \
        }                                   \
    }


#define ENUM_DAYS_OF_THE_WEEK(_) \
    _(Monday, = 0) \
    _(Tuesday, = 1) \
    _(Wednesday, ) \
    _(Thursday, = 46) \
    _(Friday, ) \
    _(Saturday, ) \
    _(Sunday, = 99)

DEFINE_ENUM(DayOfTheWeek, ENUM_DAYS_OF_THE_WEEK)

AS_STRING_DEC(DayOfTheWeek, ENUM_DAYS_OF_THE_WEEK)

AS_STRING_FUNC(DayOfTheWeek, ENUM_DAYS_OF_THE_WEEK)


int main()
{

  DayOfTheWeek d = Tuesday;
  printf("%s\n", DayOfTheWeekAsString(d) );


  return 0;
}