Compilare: user.cpp: In function ‘int main()’: user.cpp:10:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numere.in", "r", stdin); ^ user.cpp:11:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("numere.out", "w", stdout); ^ user.cpp:57:5: warning: ‘k’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=0; i<k; i++) ^ user.cpp:54:5: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(int i=0; i<j; i++) ^