strlen

NAME

<span class="Nm" id="strlen">strlen</span>

INTERFACE

#include <string.h> size_t strlen ( const char *s )

DESCRIPTION

The strlen function computes the length of the string &#92;c s.

#include <stdio.h>
#include <string.h>

int main()
{
  char s[20] = "abcde1010101";
  printf("The length of \"%s\" is %d characters.\n", s, strlen(s));
  return 0;
}

The length of "abcde1010101" is 12 characters.

RETURN VALUES

The strlen function returns the number of characters that precede the terminating <span class="Dv">NUL</span> character.

STANDARDS

The strlen function conforms to ISO/IEC 9899:1990 ("ISO C90").