Which of the following function declarations will accept either cout or a file stream object as its argument?
A) void output fstream &outFile);
B) void output ofstream &outFile);
C) void output ostream &outFile);
D) void output iostream &outFile);

Question

Quizplus · Accepted Answer

The correct choice is C) void output(ostream &outFile); because std::ostream is the base class for both std::cout (which is an instance of std::ostream) and file streams like std::ofstream. This allows the function to accept either cout or a file stream object as its argument.

Which of the Following Function Declarations Will Accept Either Cout