title: How to declare printf()?
body: <p>I wanted to print something using printf() function in C, without including stdio.h, so I wrote program as :  </p>
  
  <pre><code>int printf(char *, ...);
  int main(void)
  {
          printf("hello world\n");
          return 0;
  }
  </code></pre>
  
  <p>Is the above program correct ?</p>