Compilare: user.cpp: In function ‘int main()’: user.cpp:24:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("transport.in","rt",stdin); ^ user.cpp:25:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("transport.out","wt",stdout); ^ user.cpp:70:19: warning: ‘meret’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<meret + 1; ^