title: Implementation of strcmp
body: <p>I tried to implement <a href="http://pubs.opengroup.org/onlinepubs/009695399/functions/strcmp.html" rel="nofollow noreferrer"><code>strcmp</code></a>:</p>
  <pre><code>int strCmp(char string1[], char string2[])
  {
      int i = 0, flag = 0;    
      while (flag == 0) {
          if (string1[i] &gt; string2[i]) {
              flag = 1;
          } else
          if (string1[i] &lt; string2[i]) {
              flag = -1;
          } else {
              i++;
          }
      }
      return flag;
  }
  </code></pre>
  <p>but I'm stuck with the case that the user will input the same strings, because the function works with <code>1</code> and <code>-1</code>, but it's doesn't return <code>0</code>. Can anyone help? And please without pointers!</p>