updating oE getc
getc
<built-in> function getc(integer fn)
gets the next character (byte) from a file or device fn.
Parameters:
- fn : an integer, the handle of the file or device to read from.
Returns:
An integer, the character read from the file, in the 0..255 range. If no character is left to read, EOF is returned instead.
Errors:
The target file or device must be open.
Comments:
File input using getc is buffered, that means getc does not actually go out to the disk for each character. Instead, a large block of characters will be read in at one time and returned to you one by one from a memory buffer.
When getc reads from the keyboard, it will not see any characters until the user presses Enter. Note that the user can type Control+Z, which the operating system treats as "end of file" returning EOF.
See Also:
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