Command: Get size of string.
((PUB ┆ PRI))
STRSIZE ( StringAddress )
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Returns: Size (in bytes) of zero-terminated string.
- StringAddress is an expression specifying the starting address of the string to measure.
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Explanation
STRSIZE is one of two commands (STRCOMP and STRSIZE) that retrieve information about a string. STRSIZE measures the length of a string at StringAddress, in bytes, up to, but not including, a zero-termination byte.
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Using STRSIZE
The following example assumes Print is a method created elsewhere.
| Code Block |
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PUB Main |
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Print(strsize(@Str1)) |
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Print(strsize(@Str2)) |
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DAT Str1 byte "Hello World", 0 |
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Str2 byte "Testing.", 0 |
The above example has two zero-terminated strings in the DAT block, Str1 and Str2. The Main method calls STRSIZE to get the length of each string. Assuming Print is a method that displays a value, this example prints 11 and 8 on the display.
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Zero-Terminated Strings
The STRSIZE command requires the string being measured to be zero-terminated; a byte equal to 0 must immediately follow the string. This practice is quite common and is recommended since most string-handling methods rely on zero terminators.