strlen

   NAME
    strlen - returns length of a string

   SYNOPSIS
    int len = strlen(s);
    const char *s;

   FUNCTION
    The length of the requested string is returned.  The string is
    scanned until a nul terminator is found and the number of
    characters (not including the nul) is returned.

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

    main()
    {
        char buf[32];
        int len;

        strcpy(buf, "Fu Bar Bear Boo");
        len = strlen(buf);

        assert(len == 15);

        strcat(buf, "xx");

        len = strlen(buf);

        assert(len == 17);

        return(0);
    }

   INPUTS
    char *s;        string to obtain length of

   RESULTS
    int len;        length of string

   SEE ALSO
    strcpy, strcat