CLEAR

From QB64 Phoenix Edition Wiki
Revision as of 16:58, 19 April 2022 by BigRon55 (talk | contribs) (Created page with "The CLEAR statement clears all variable and array element values in a program. {{PageSyntax}} : CLEAR [, {{Parameter|ignored&}} , {{Parameter|ignored&}}] {{PageDescription}} * All parameters are optional and ignored by '''QB64'''. * Normally used to clear all program variable and array values where numerical values become zero and string values become empty (""). * It does not clear constant values. * Closes all opened files. * $DYNAMIC...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

The CLEAR statement clears all variable and array element values in a program.


Syntax

CLEAR [, ignored& , ignored&]


Description

  • All parameters are optional and ignored by QB64.
  • Normally used to clear all program variable and array values where numerical values become zero and string values become empty ("").
  • It does not clear constant values.
  • Closes all opened files.
  • $DYNAMIC or REDIM arrays will need to be redimensioned or an error will occur when referenced because they are removed.


Examples

Example: Using CLEAR to clear array elements from static arrays or arrays created using DIM.

  
CLS
DIM array(10)   'create a $STATIC array
array(5) = 23

PRINT array(5)

CLEAR

PRINT array(5)  
Note: If you change DIM to REDIM a "Subscript out of range" error will occur because a $DYNAMIC array is removed by CLEAR.


See also



Navigation:
Main Page with Articles and Tutorials
Keyword Reference - Alphabetical
Keyword Reference - By usage
Report a broken link