C file input/output: Difference between revisions

Revision as of 21:46, 20 April 2004

Revision as of 22:00, 20 April 2004

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In [[computer programming]], the <code>'''fopen'''</code>, with related functions <code>'''fdopen'''</code> and '''<code>freopen</code>''', is one of the basic functions in the [[C programming language]]. They return a [[stream]] attached to the specified [[computer file|file]] from which reading and writing can be done. Because it is so popular, many script languages derived from C tend to provide the same function with the same or similar functionality. It is considered higher-level than the <code>[[open]]</code> [[system call]] of UNIX operating systems.

They are defined as.

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<pre>

FILE *f = fopen("filename", "rb");

[[fseek]](f, 0, SEEK_END);

length = [[tell]](f);

[[rewind]](f);

</pre>