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  STRLEN

  .  Summary

  strlen(str <s>);

  .  Description

  The strlen function returns the number of characters in the string
  <s>. Since strings are terminated with a 0 (NULL) character, this
  function really counts the number of characters before a 0 is en-
  countered.

  .  Return Value

  An integer value representing the length of a string.

  .  Example

  str teststr[] = "This is a test string";
  printsc("The length of 'teststr' is ");
  printn(strlen(teststr));