Programming in C++, 2nd Edition

File Opening Modes 655

The while() or if() statement checks whether the value is zero or non-zero (address of object).

Here, zero means false, and non-zero means true. The details of the above functions are discussed

later in the same chapter.

16.6 FILE OPENING MODES

In previous examples, we have learned how to open files using constructors and the open()

function using the objects of ifstream and ofstream classes. The opening of the file also

involves several modes depending on the operation to be carried out with the file. The open()

function has the following two arguments:

Syntax of open() function

object.open ( “file_ name”, mode);

Here, the ...