![]() ![]() These variables are defined in the standard include file. Four class variables are automatically created when you start a program. C++ refers to files as streams since it considers them a stream of bytes. Also, in some cases, the C-style I/O routines are superior to the ones provided with C++.Ĭ++ file I/O is based on three classes: the istream class for input, the ostream class for output, and the iostream class for input/output. Although it is somewhat outdated, C I/O calls still appear in old code. Next, we examine the raw I/O routines that give us direct access to the low-level I/O. This is the most commonly used I/O system and the one we’ve been using up to now. This chapter discusses three different I/O packages. Many files reside on disk however, devices such as printers, magnetic tapes, and communication lines are also considered files. I am the heir of all the ages, in the foremost files of time.Ī file is a collection of related data.
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