QBasic 1.1: LINE INPUT Statement

Explanation

INPUT, LINE INPUT Statements

INPUT reads input from the keyboard or a file. LINE INPUT reads a line of up to 255 characters from the keyboard or a file.

Worth knowing

Useful and cross-version information about the programming environments of QBasic, QuickBasic and Visual Basic for DOS.

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You are here: References Overview > QBasic 1.1 Commands List > LINE INPUT Statement

Syntax

INPUT [;] ["prompt"{; | ,}] variablelist

LINE INPUT [;] ["prompt";] variable$

INPUT #filenumber%, variablelist

LINE INPUT #filenumber%, variable$

Description / Parameter(s)

prompt	An optional literal string that is displayed before the user enters data. A semicolon after prompt appends a question mark to the prompt string.
variablelist	One or more variables, separated by commas, in which data entered from the keyboard or read from a file is stored. Variable names can consist of up to 40 characters and must begin with a letter. Valid characters are A-Z, 0-9, and period (.).
variable$	Holds a line of characters entered from the keyboard or read from a file.
filenumber%	The number of an open file.
INPUT uses a comma as a separator between entries. LINE INPUT reads all characters up to a carriage return.
For keyboard input, a semicolon immediately after INPUT keeps the cursor on the same line after the user presses the Enter key.

Example


CLS
OPEN "LIST" FOR OUTPUT AS #1
DO
  INPUT "   NAME:       ", Name$  'Read entries from the keyboard.
  INPUT "   AGE:        ", Age$
  WRITE #1, Name$, Age$
  INPUT "Add another entry"; R$
LOOP WHILE UCASE$(R$) = "Y"
CLOSE #1
'Echo the file back.
OPEN "LIST" FOR INPUT AS #1
CLS
PRINT "Entries in file:": PRINT
DO WHILE NOT EOF(1)
  LINE INPUT #1, REC$  'Read entries from the file.
  PRINT REC$           'Print the entries on the screen.
LOOP
CLOSE #1
KILL "LIST"