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11 INSTRUCTIONS AND FUNCTIONS
CLEAR
Instruction
• Initializes all variables and sets up the memory area.
CLEAR
Syntax
arithmetic expression
CLEAR 1000
Examples
• The CLEAR instruction initializes all variables and sets up a memory area.
Description
• After the CLEAR instruction is executed, contents of variables, declarations, and definitions
become as follows:
Numeric variable
Character variable
Array definition (DIM statement)
Type declaration of variable
User-defined function
• A large memory area is required in order to process many characters. An "Out of string
space" error occurs if the memory area is insufficient. In this case, increase the memory
area by specifying <arithmetic expression> in the CLEAR instruction.
• The default value is set to 300 when the interpreter is started up.
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CLEAR
[ <arithmetic expression> ]
• • • •
• • • •
REMARK
• Use the ERASE instruction in order to initialize only the array variables.
• See the DIM instruction and FRE function.
Specify the size of the memory area used for storing
the character string by BASIC in number of bytes. It
is set to 300 if the arithmetic expression is omitted,
however.
Initializes variables and sets up a memory area of
1000 bytes.
• • • •
0
• • • •
Empty character string
• • • •
Invalid
• • • •
Invalid
• • • •
Invalid
MELSEC-Q
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