string getRootName(string);
bool isBlank(string);
int openOutputFile(string, ofstream&);
+ int openOutputFileBinary(string, ofstream&);
int openOutputFileAppend(string, ofstream&);
+ int openOutputFileBinaryAppend(string, ofstream&);
int openInputFile(string, ifstream&);
int openInputFile(string, ifstream&, string); //no error given
string getline(ifstream&);