QBasic 1.1: 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.

ASCII Code Tables
Keyboard Scan Codes
Syntax Conventions
Screen Modes
Color Attributes
Error Codes

You are here: References Overview > QBasic 1.1 Commands List > 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"