Compilare: user.cpp: In function ‘double StrToDouble(std::string)’: user.cpp:57:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < exp.find('.'); i++) ^ user.cpp:59:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = exp.size()-1; i > exp.find('.'); i--) ^ user.cpp:63:31: 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:71:33: 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:97:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < exp.size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:26:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare.in", "r", stdin); ^ user.cpp:27:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare.out", "w", stdout); ^ user.cpp: In function ‘int SearchFunction(std::string, int, int)’: user.cpp:49:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘double GetValue(nod*)’: user.cpp:139:1: warning: control reaches end of non-void function [-Wreturn-type] } ^