Compilare: user.cpp: In function ‘void nrpr()’: user.cpp:24:15: warning: variable ‘k’ set but not used [-Wunused-but-set-variable] for (i = 2; i * i * 1LL <= n; ++ i) ^ user.cpp: In function ‘int main()’: user.cpp:38:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("divizori.out", "w", stdout); ^ user.cpp:39:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:40:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] d[++ d[0]] = 1; ^