 | | When using the Standard I/O Library functions, an open file with its associated buffers is called a stream and is referenced by a file pointer. A file pointer is a variable of type FILE *, as defined in the include file stdio.h. There are three predefined file pointers associated with the three open files given to each process when it is invoked: stdin refers to the standard input file (usually the keyboard), stdout refers to the standard output file (usually the screen), and stderr refers to the standard error file (also usually the screen). | |
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