Compilare: user.c: In function ‘main’: user.c:50:18: warning: format ‘%lu’ expects argument of type ‘long unsigned int *’, but argument 3 has type ‘uint64_t * {aka long long unsigned int *}’ [-Wformat=] fscanf(fin, "%lu", &p); ^ user.c:52:20: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘uint64_t {aka long long unsigned int}’ [-Wformat=] fprintf(fout, "%lu\n", cauta(p, 1, UINT32_MAX)); ^ user.c:50:3: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%lu", &p); ^~~~~~~~~~~~~~~~~~~~~~