Compilare: user.cpp: In function ‘double StrToDouble(std::string)’: user.cpp:54:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < exp.find('.'); i++) ^ user.cpp:56:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = exp.size()-1; i > exp.find('.'); i--) ^ user.cpp:60:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < exp.size(); i++) ^ user.cpp: In function ‘bool FirstAndLastPar(std::string)’: user.cpp:68:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < exp.size()-1; i++) ^ user.cpp: In function ‘nod* Evaluare(std::string)’: user.cpp:94:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < exp.size(); i++) ^ user.cpp: In function ‘int SearchFunction(std::string, int, int)’: user.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘double GetValue(nod*)’: user.cpp:136:1: warning: control reaches end of non-void function [-Wreturn-type] } ^