/*
 * chardec1.c
 */
#include <stdio.h>

int main(void)
{
  char xx;
  printf("ASCII Example\n");
  printf("Please ender a lower case letter: ");
  scanf("%c", &xx);
  // only allow letters
  if (xx<97  || xx>122)
  {
    printf("That is not a lower case letter!\n");
    return 1;
  }

  printf("\nThe ASCII number of %c is %d\n", xx, xx);
  printf("The corresponding upper case letter is: %c \n", xx-32);

  return 0;
}