HelpPC 2.10 Quick Reference Utility Copyright 1991 David Jurgens

                           int isatty( int handle )

       - prototype in io.h

       - if handle is associated with a character device like tty,
         console, printer, or serial port returns a non-zero integer
         otherwise returns zero

Esc or Alt-X to exit isatty Home/PgUp/PgDn/End ←↑↓→
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