Compilare: user.c: In function ‘main’: user.c:25:13: warning: unused variable ‘i’ [-Wunused-variable] uint64_t i = 0; ^ user.c:17:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%llu%*c", &t); ^ user.c:27:10: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%llu%*c", &n); ^ user.c: In function ‘ciur’: user.c:150:1: warning: control reaches end of non-void function [-Wreturn-type] } ^