ULLONG_MAX from limits.h isn't working

Question

This works on sololearn:

printf("LLONG_MAX = %lld", LLONG_MAX);

But this doesn't work:

printf("ULLONG_MAX = %llu", ULLONG_MAX);

why?

[EDIT]

Ok, let me be more specific here...
Try this with and without commenting the last printf:

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

int main() {

printf("\n========================================\n");
printf("Signed Integer Types");
printf("\n========================================\n");

printf("\nsigned char\n\n");

printf("SCHAR_MIN = %+hhd\n", SCHAR_MIN);
printf("SCHAR_MAX = %+hhd\n", SCHAR_MAX);

printf("\nsigned short int\n\n");

printf("SHRT_MIN = %+hd\n", SHRT_MIN);
printf("SHRT_MAX = %+hd\n", SHRT_MAX);

printf("\nsigned int\n\n");

printf("INT_MIN = %+d\n", INT_MIN);
printf("INT_MAX = %+d\n", INT_MAX);

printf("\nsigned long int\n\n");

printf("LONG_MIN = %+ld\n", LONG_MIN);
printf("LONG_MAX = %+ld\n", LONG_MAX);

printf("\nsigned long long int\n\n");

printf("LLONG_MIN = %+lld\n", LLONG_MIN);
printf("LLONG_MAX = %lld\n", LLONG_MAX);

printf("\n========================================\n");
printf("Unsigned Integer Types");
printf("\n========================================\n");

printf("\nunsigned char\n\n");

printf("UCHAR_MAX = %hhu\n", UCHAR_MAX);

printf("\nunsigned short int\n\n");

printf("USHRT_MAX = %hu\n", USHRT_MAX);

printf("\nunsigned int\n\n");

printf("UINT_MAX = %u\n", UINT_MAX);

printf("\nunsigned long int\n\n");

printf("ULONG_MAX = %lu\n", ULONG_MAX);

printf("\nunsigned long long int\n\n");

printf("ULLONG_MAX = %llu\n", ULLONG_MAX);

return 0;
}

why does the last printf result in compilation error?

Answer 1

It perfectly works.

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

int main() {
printf("LLONG_MAX = %lld\n", LLONG_MAX);
// 92233...
printf("ULLONG_MAX = %llu", ULLONG_MAX);
// 18446...
}