title: i don't know why my dev c++ #include doesn't work
body: <p>the #include doesn't work in my dev c</p>
  
  <pre><code>#include&lt;stdio.h&gt;
  int main()
  {
      printf("ssss");
  } 
  </code></pre>
  
  <p>the #include doesn't work in my dev c</p>
  
  <p>here's the message [error] </p>
  
  <p>"printf" was not declared in this scope</p>
  
  <p>i deleted dev c and install it over and over again but it remains the same</p>
  
  <p>this situation happens when I practice File io</p>