Compilare: main.cpp: In function 'int main()': main.cpp:8:51: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nave_interdimensionale.in","r",stdin); ^ main.cpp:9:53: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nave_interdimensionale.out","w",stdout); ^ main.cpp:75:14: warning: 'to' may be used uninitialized in this function [-Wmaybe-uninitialized] fl[to]++; ~~~~~^ main.cpp:74:19: warning: 'from' may be used uninitialized in this function [-Wmaybe-uninitialized] fl[from]--; ^ main.cpp:48:14: warning: 'to' may be used uninitialized in this function [-Wmaybe-uninitialized] fc[to]++; ~~~~~^ main.cpp:47:19: warning: 'from' may be used uninitialized in this function [-Wmaybe-uninitialized] fc[from]--; ^