Printf was not declared in this scope
<p>I have just started to learn C. But the first program in the book which i am referring generates an error that</p>

<blockquote>
  <p>"printf was not declared in this scope"</p>
</blockquote>

<p>I am typing the code exactly as it is given in the book. Still the error is being given. 
<a href="https://i.stack.imgur.com/q5vQy.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/q5vQy.jpg" alt="book"></a></p>

<p><a href="https://i.stack.imgur.com/RAIWu.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RAIWu.jpg" alt="code"></a></p>