Refreshing C, did you think my code is world class, or very good

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Due to been unable to ask a C programming language expert or advanced user in person I'm posting this simple question about my C code, today I was refreshing my C with exercise 5.4 of the C programming Language 2nd Edition by K&R, which is a very simple exercise, the question is:

do you think that my way of handling pointers (code is below) is 'very good' or 'world class'?

I know the example is short/simple but that question comes to my mind because I want to know the opinion from other knowledgeable people about the subject, if you want to critic my code please do so, I'm always tring to push my current C knowledge to the next level, if you think other (better) way to do it please post it, thank you all.

lksw

    /*----------------------------------------------------*/
    #include <stdio.h>
    #include <string.h>

    /*
      Exercise 5-4.
      Write the function strend(s,t) 
      which returns 1 if the string t occurs at the
      end of the string s, and zero otherwise.
    */
    int strend(char *s, char *t);
    int vstrend(char *s, char *t);

    int main(int argc, char *argv[])
    {
      int rt; 

      if ( rt = vstrend("Unix Powered", "red"))
         printf("occurs\n");

     return 0;
    }

    /*
      find if 't' occurs at the end of 's'
    */
    int
    strend(char *s, char *t)
    {
       while (*s)
          s++;
       s -= strlen(t);
       for (; *t ; s++, t++) {
          if ( *s != *t) 
             return 0;
       }
     return 1;
    } 

    /*
      same as strend but without the call
      to strlen
    */
    int
    vstrend(char *s, char *t)
    {
       char *pt = t;
       for ( ; *s ; s++);
       for ( ; *t ; t++, s-- ); 
       t = pt;
       for (; *t ; s++, t++) {
          if ( *s != *t) 
             return 0;
       }
     return 1;
    }
    /*----------------------------------------------------*/