Compilare: user.cpp: In function ‘int main()’: user.cpp:72:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxd.in","r",stdin); ^ user.cpp:73:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("maxd.out","w",stdout); ^ user.cpp: In function ‘void minimdiv(int, int)’: user.cpp:66:11: warning: ‘minim’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<minim<<" "<<maxd<<" "<<c; ^