title: Fatal error 'stdio.h' not found
body: <p>Why am I getting this message? The compiler is clang. Here is a simple program where it occurs for examples sake:</p>
  
  <pre><code>#include&lt;stdio.h&gt;
  
  int fib(int);
  int main()
  {
      int i;
      scanf("%d",&amp;i);
      printf("The fibonacci number that is %i'th in the sequence is %i \n", i, fib(i));
  return 0;
  }
  
  int fib(int n)
  {
      if (n==1 || n==0) return 1;
      else return fib(n-1)+fib(n-2);
  }
  </code></pre>