Karl Jones: Created page with "In computing, '''end-of-file''' (commonly abbreviated '''EOF''') is a condition in a computer operating system where no more data can be read from..."

2016-04-26T02:10:57Z

Created page with "In computing, '''end-of-file''' (commonly abbreviated '''EOF''') is a condition in a computer operating system where no more data can be read from..."

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In [[computing]], '''end-of-file''' (commonly abbreviated '''EOF''') is a condition in a computer [[operating system]] where no more [[Data (computing)|data]] can be read from a [[data source]].

== Description ==

The data source is usually called a [[File (computing)|file]] or [[Stream (computing)|stream]].

In general, the EOF is either determined when the reader returns null as seen in Java's BufferedReader, or sometimes people will manually insert an EOF character of their choosing to signal when the file has ended.

In the C Standard Library, the character reading functions such as getchar return a value equal to the symbolic value (macro) EOF to indicate that an end-of-file condition has occurred.

The actual value of EOF is system-dependent (but is commonly -1, such as in glibc) and is unequal to any valid character code.

Block-reading functions return the number of bytes read, and if this is fewer than asked for, then the end of file was reached or an error occurred (checking of errno or dedicated function, such as ferror is often required to determine which).

== See also ==

* [[Data source]]
* [[End-of-transmission character]]
* [[End of message]]
* [[Here document]]
* [[Substitute character]]
* [[Text file]]

== External file ==

* [https://en.wikipedia.org/wiki/End-of-file End-of-file] @ Wikipedia

[[Category:Computing]]
[[Category:Digital file formats]]
[[Category:Text]]

End-of-file - Revision history

Karl Jones: Created page with "In computing, '''end-of-file''' (commonly abbreviated '''EOF''') is a condition in a computer operating system where no more data can be read from..."