/*
 *  hist.c
 *  
 * Exercise 1-13. Write a program to print a histogram of the lengths of words in its input.
 * This version prints a horizontal histogram. It uses the character █ for the bars.
 * 
 */


#include <stdio.h>
#define	MAX_WORD_LENGTH	30	// The maximum number of letters in a word.
#define	NUMBER_WORDS 0	// To call the first member of the array.

float wordLength	[MAX_WORD_LENGTH]; // array to hold the counts; zero is the number of words

main() {
	
	int c; // counter
	int character; // the character we're looking at
	float p;	// printing counter
	int s;  // printing symbol
	
	for (c = 0; c <= MAX_WORD_LENGTH; c++) {
		wordLength[c] = 0;
	} // end initialization for loop
	
	c = 0; // set count to zero
	
	while ((character = getchar()) != EOF) { // get the character, stuff it into character, check for EOF
		
		
		if ((character >= 'a' && character <= 'z') || // if it's a lower case letter or
			character >= 'A' && character <= 'Z') {   // an upper case letter
			c++; //increment the counter
			
		} // end if
		
		else { // it's the end of the word, c holds the length of the word we just found.
			wordLength[c]++;
			wordLength[NUMBER_WORDS]++; // increment number of words
			c = 0; // re-set the counter for the next word
		} // end else
	} // end while loop
	
	/*******************
	 Printing- we've left the while loop because an EOF showed up
	 *******************/
	
	for (c = 1; c <= MAX_WORD_LENGTH; c++) {
		
		/* Note that this for loop starts with one, not zero.
		 This is because zero holds the number of words,
		 and each word had at least one letter. */
		
		/**************************************
		 This is a test printing sequence I used to make sure the right
		 members of the array were incrementing. I left it here in case
		 final protective fire full panic testing was needed.
		printf("C-");
		printf("%d", c);
		printf(" is ");
		printf("%f \n", wordLength[c]);
		 **************************************/		 
		
		p = ((wordLength[c] / wordLength[NUMBER_WORDS]) * 100); // Each symbol is 1%
		
		printf("%2.0d", c);
		printf(" letters:");

		for (s = 1; s <= p; s++) {
					printf("█");
				} // end printing for loop
		
		printf("\n");
		
	} // end for loop
} // end main