title: How can I make switch-case statements case insensitive?
body: <p>How can I make a switch-case statement to not be case sensitive?
  Say I made something like this:</p>
  
  <pre><code>#include &lt;stdio.h&gt;
  
  char choice;
  int main ()
  {
  char choice;
  printf("Will you choose A,B, or C?\n&gt;");
  scanf(" %c", &amp;choice);
  
  switch(choice)
  {
      case 'A': 
           printf("The First Letter of the Alphabet");
           break;
      case 'B':
           printf("The Second Letter of the Alphabet");
           break;
      case 'C':
           printf("The Third Letter of the Alphabet");
           break;
  }
  }
  </code></pre>
  
  <p>It would only respond to capital letters. How do I make it respond to lower case letters?</p>