title: Crashing when i put simple int variable
body: <p>I have simple input function that works:</p>
  
  <pre><code>int main(void)
  {
      char *first;
      char *last;
  
      scanf("%s", first);
  
      printf("%s", last);
  
      return 1;
  }
  </code></pre>
  
  <p>But when i start to expand my work, and put simple counter, programs crash:</p>
  
  <pre><code>int main(void)
  {
      int i = 0;
      char *first;
      char *last;
  
      scanf("%s", first);
  
      printf("%s", last);
  
      return 1;
  }
  </code></pre>
  
  <p>any idea ?</p>