/in/foo.cc: In function 'int main()':
/in/foo.cc:55:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < baseK.size(); i++)
                     ~~^~~~~~~~~~~~~~
/in/foo.cc: In function 'int charToInt(char)':
/in/foo.cc:20:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'char intToChar(int)':
/in/foo.cc:26:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^