Compilare: user.cpp: In function ‘int Evaluate(std::queue<char, std::deque<char, std::allocator<char> > >, int*)’: user.cpp:32: warning: array subscript has type ‘char’ user.cpp: In function ‘std::queue<char, std::deque<char, std::allocator<char> > > BuildRPF(char*)’: user.cpp:83: warning: array subscript has type ‘char’ user.cpp:83: warning: array subscript has type ‘char’ user.cpp: In function ‘std::vector<int, std::allocator<int> > GetVariables(char*)’: user.cpp:103: warning: array subscript has type ‘char’ user.cpp: In function ‘void Solve(std::queue<char, std::deque<char, std::allocator<char> > >*, char (*)[300])’: user.cpp:131: warning: comparison between signed and unsigned integer expressions user.cpp: In function ‘int main()’: user.cpp:153: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:154: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:156: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:164: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result