To create an input file object, you would use what kind of type? ifstream ofstream fstream instream What do the following statements accomplish? ifstream theFile; the File.open(myFile.txt, ios::in); Opens myFile in read mode Opens myFile in append mode Creates an empty file named myFile Opens a file in input mode to write to The function used to determine whether an entire sequential access file has been read is called _____ close() function eof() function open() function None of the above Which of the following functions should be used to determine if a file was successfully closed? is_active is_open is_closed is_ready