Compilare: main.cpp: In member function 'void Function::buildPostfix(char*&)': main.cpp:86:71: warning: array subscript has type 'char' [-Wchar-subscripts] while(!s.empty() && priorities[s.top()]>=priorities[*p] && s.top()!=*p) ^ main.cpp: In function 'int main()': main.cpp:273:51: warning: operation on 'c' may be undefined [-Wsequence-point] values[*(c-2)-'a']=-getNumber(++c); ^~~ main.cpp: In member function 'long int Function::getRes(long int*, char)': main.cpp:118:1: warning: control reaches end of non-void function [-Wreturn-type] } ^