Creating my own strcmp () function in C

Question

I was assigned by my teacher to write my own strcmp() function in C. I did create my own version of said function, and I was hoping to get some feedback.

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Answer 1

    int mystrncmp(const char * str1, const char * str2, unsigned int n)
     {
      while (*str1 == *str2) {
          if (*str1 == '\0' || *str2 == '\0')
             break;

          str1++;
          str2++;
       }


   if (*str1 == '\0' && *str2 == '\0')
      return 0;
   else
      return -1;
}