Compilare: main.cpp: In function 'int main()': main.cpp:63:8: warning: variable 'done' set but not used [-Wunused-but-set-variable] bool done = false; ^~~~ main.cpp:21:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("casute.in", "r", stdin); ^ main.cpp:22:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("casute.out", "w", stdout); ^