Returns a string of characters read from a specified file.
 
INPUT$(n[,[#]filenumber%])
 
    - n              The number of characters (bytes) to read.
    - filenumber%    The number of an open file. If filenumber% is
                     omitted, INPUT$ reads from the keyboard.
 
Example:
    OPEN "TEST.DAT" FOR OUTPUT AS #1
    PRINT #1, "The text"
    CLOSE
    OPEN "TEST.DAT" FOR INPUT AS #1
    PRINT INPUT$(3, 1)        'Print first 3 characters.
    CLOSE
 
See Also    <INPUT, LINE INPUT>