/* 
	Program letter_freq does a frequency analysis of a text file sent to stdin.

	John Nordlie, November 2011
*/

#include<stdio.h>
#define MAX 125

int main() {
	int character, i;
	double frequency[MAX];

	/* zero the array */
	for (i=0; i<MAX; i++)
		frequency[i] = 0.0;

	/* get the first character */
	character = fgetc(stdin);

	/* main loop */
	while (!feof(stdin)) {

		/* if character in A - Z, add it to the array */
		if ((character < 91)&&(character > 64)) {
			frequency[character]++;
		} else {
			/* if character in a - z, rotate it */
			if ((character < 123) && (character > 96)) {
				frequency[character]++;
			}
		}

		/* get the next input character */
		character = fgetc(stdin);

	} /* end if */

	printf("Letter		Number of hits\n");

	/* take out capitalization, print out array */
	for (i = 97; i < 123; i++) {
		frequency[i] += frequency[i-32];
		printf("%c		%.0f\n", i, frequency[i]);
	}


} /* end main */