/**
 * freq.c
 *   A simple frequency count program.
 *
 *   Copyright (c) 2015 Samuel A. Rebelsky.  All rights reserved.
 *
 *   freq.c is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   freq.c is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with freq.c.  If not, see <http://www.gnu.org/licenses/>.
 */

// +----------+------------------------------------------------------
// | Includes |
// +----------+

#include <stdio.h>
#include <ctype.h>

// +-------+---------------------------------------------------------
// | Utils |
// +-------+

/**
 * Compute an index for a character.
 */
int 
indexOf (int ch)
{
  ch = tolower(ch);
  if (islower(ch))
    return ch - 'a';
  else if (ch == ' ')
    return 26;
  else
    return 27;
} // indexOf

// +------+----------------------------------------------------------
// | Main |
// +------+

int
main ()
{
  int counts[28];       // American English
  int i;
  int ch;
  
  for (i = 0; i < 28; i++)
    counts[i] = 0;

  while ((ch = getchar()) != EOF)
    ++counts[indexOf(ch)];
  for (i = 0; i < 13; i++)
    printf("  %c ", i + 'a');
  printf("\n");
  for (i = 0; i < 13; i++)
    printf("%3d ", counts[i]);
  printf("\n");
  for (i = 13; i < 26; i++)
    printf("  %c ", i + 'a');
  printf("\n");
  for (i = 13; i < 26; i++)
    printf("%3d ", counts[i]);
  printf("\n");
  printf("<space>\n");
  printf("%3d\n", counts[26]);

  return 0;
} // main()