How do I dump an arbitrary struct in C?

Question

I don\'t know which direction to go,perhaps something like reflection will help?

Answer 1

The answer of @Kerrek SB works realy well, I just post how to use it in a function using a void pointer.

int dump(void *myStruct, long size)
{
    unsigned int i;
    const unsigned char * const px = (unsigned char*)myStruct;
    for (i = 0; i < size; ++i) {
        if( i % (sizeof(int) * 8) == 0){
            printf("\n%08X ", i);
        }
        else if( i % 4 == 0){
            printf(" ");
        }
        printf("%02X", px[i]);
    }

    printf("\n\n");
    return 0;
}

int main(int argc, char const *argv[])
{
    OneStruct data1, data2;

    dump(&data1, sizeof(OneStruct));

    dump(&data2, sizeof(OneStruct));

    return 0;
}