Command: Get size of string.

((PUB ┆ PRI))
   STRSIZE ( StringAddress )

Returns: Size (in bytes) of zero-terminated string.

• StringAddress is an expression specifying the starting address of the string to measure.

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.

Using STRSIZE

The following example assumes Print is a method created elsewhere.

PUB Main
  Print(strsize(@Str1))
  Print(strsize(@Str2))
 
DAT
  Str1 byte "Hello World", 0
  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.

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.