Compilare: user.cpp: In function ‘void debugMode()’: user.cpp:13:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("alpin.in", "r", stdin); ^ user.cpp:14:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("alpin.out", "w", stdout); ^ user.cpp: In function ‘int main()’: user.cpp:91:23: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] afisare_drum(x, y); ^ user.cpp:91:23: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized]