CLEAR - mkilgore/QB64pe GitHub Wiki

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

CLEAR [,]

• 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.

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

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.

• ERASE
• REDIM, _PRESERVE
• Arrays, _BIT arrays