Generates a GUID

guidgenerator.c

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

int main(int argc, char *argv[])
{
    /* Declare variables */
    GUID guid;
    HRESULT result;

    /* Display a help message */
    if (argc == 2 && (!strcmp(argv[1], "/?") || !strcmp(argv[1], "-?") || !strcmp(argv[1], "-h") || !strcmp(argv[1], "--help")))
    {
        printf("Generates and displays a guid\n");
        printf("\n");
        printf("GUID\n");
        exit(1);
    }

    // Generate the guid
    result = CoCreateGuid(&guid);

    // Display the guid in the format we love
    printf("%08lX-%04hX-%04hX-%02hhX%02hhX-%02hhX%02hhX%02hhX%02hhX%02hhX%02hhX",
           guid.Data1, guid.Data2, guid.Data3, guid.Data4[0], guid.Data4[1], guid.Data4[2],
           guid.Data4[3], guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]);

    // Return the result of the guid generation
    return result;
}