adprod.cpp: In function `void afis(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)': adprod.cpp:11: warning: comparison between signed and unsigned integer expressions adprod.cpp: In function `void calc(int)': adprod.cpp:17: warning: `int obt1' might be used uninitialized in this function adprod.cpp:17: warning: `int obt2' might be used uninitialized in this function