Compilare: main.c: In function 'main': main.c:42:21: warning: format '%llu' expects argument of type 'long long unsigned int *', but argument 3 has type 'uint64_t *' {aka 'long unsigned int *'} [-Wformat=] 42 | fscanf(fin, "%llu %llu", &a, &b); | ~~~^ ~~ | | | | | uint64_t * {aka long unsigned int *} | long long unsigned int * | %lu main.c:42:26: warning: format '%llu' expects argument of type 'long long unsigned int *', but argument 4 has type 'uint64_t *' {aka 'long unsigned int *'} [-Wformat=] 42 | fscanf(fin, "%llu %llu", &a, &b); | ~~~^ ~~ | | | | | uint64_t * {aka long unsigned int *} | long long unsigned int * | %lu main.c:44:23: warning: format '%llu' expects argument of type 'long long unsigned int', but argument 3 has type 'uint64_t' {aka 'long unsigned int'} [-Wformat=] 44 | fprintf(fout, "%llu", res); | ~~~^ ~~~ | | | | | uint64_t {aka long unsigned int} | long long unsigned int | %lu main.c:44:5: warning: argument 1 null where non-null expected [-Wnonnull] 44 | fprintf(fout, "%llu", res); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from main.c:1: /usr/include/stdio.h:350:12: note: in a call to function 'fprintf' declared 'nonnull' 350 | extern int fprintf (FILE *__restrict __stream, | ^~~~~~~