QBasic 1.1: IF...THEN...ELSE Statement

Explanation

IF...THEN...ELSE Statement

Executes a statement or statement block depending on specified conditions.

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 > IF...THEN...ELSE Statement

Syntax

IF condition1 THEN
   [statementblock-1]
[ELSEIF condition2 THEN
   [statementblock-2]]...
[ELSE
   [statementblock-n]]
END IF
 
IF condition THEN statements [ELSE statements]

Description / Parameter(s)

condition1 condition2	Any expression that can be evaluated as true (nonzero) or false (zero).
statementblock-1 statementblock-2 statementblock-n	One or more statements on one or more lines.
statements	One or more statements, separated by colons.

Example


INPUT "1 or 2? ", i%
IF i% = 1 OR i% = 2 THEN
  PRINT "OK"
ELSE
  PRINT "Out of range"
END IF