Compilare: user.cpp: In function ‘int main()’: user.cpp:30:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j <= nrmax){ ^ user.cpp:39:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < n - nrmax; i++) ^ user.cpp:42:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < nrmax; i++) ^ user.cpp:18:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sir7.in", "r", stdin); ^ user.cpp:19:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sir7.out", "w", stdout); ^ user.cpp:23:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld", &n, &smax, &smin); ^