Switch Case in C programming examples

#include<stdio.h>

/******************************************
* This program uses the switch statement  *
******************************************/

int main()
{
  char letter;

  printf("Enter a letter:  ");

  scanf("%c", letter);

  switch (letter)
  {
    case 'A':
    case 'a':
      printf("A is for Apple.\n");
      break;

    case 'B':
    case 'b':
      printf("B is for Bear.\n);
      break;

    case 'C':
    case 'c':
      printf("C is for Cat.\n");
      break;

    case 'D':
    case 'd':
      printf("D is for Dog.\n);
      break;

    case 'E':
    case 'e':
      printf("E is for Elephant.\n);
      break;

    case 'F':
    case 'f':
      printf("F is for Fox.\n);
      break;


    /* Put the rest of the letters here  */

    default:
      printf("I am sorry, %c is not a letter.\n", letter);
  }

  return 0;
}