enum flags, while

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

enum flags {

    FLAG_1   = 0x00000001,
    FLAG_2   = 0x00000002,
    FLAG_3   = 0x00000004,
    FLAG_4   = 0x00000008,
    FLAG_5   = 0x00000010,
    FLAG_B_MAX  = 0x7FFFFFFF

};

int main()
{

    uint32_t test_flags = FLAG_2 | FLAG_4;

    uint32_t val = test_flags;

    uint32_t pos = 0x1;

    while( val )
    {

        if( val & 1 )
        {
            switch(pos)
            {
                case FLAG_1:
                    printf("FLAG_1 ");
                    break;

                case FLAG_2:
                    printf("FLAG_2 ");
                    break;

                case FLAG_3:
                    printf("FLAG_3 ");
                    break;

                case FLAG_4:
                    printf("FLAG_4 ");
                    break;

                case FLAG_5:
                    printf("FLAG_5 ");
                    break;

                default:
                    printf("Unhandled ");
                    break;
            }
        }

        pos<<=1;
        val>>=1;
    }

    printf("\n");

    return 0;
}

/*
output:

FLAG_2 FLAG_4

*/