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:65:19: warning: 'pmin' may be used uninitialized in this function [-Wmaybe-uninitialized] fl[pmin]++; ^ main.cpp:42:19: warning: 'pmin' may be used uninitialized in this function [-Wmaybe-uninitialized] fc[pmin]++; ^