using namespace std;

#include <iostream>
#include <cstring>
#include <cctype>
#include <iomanip>



void CountValue(int &WordLength, int &CharCount, int FrequencyArray[]);		//function prototype

int main() {

	const int MAX_SIZE_OF_ARRAY = 16;											//variable declaration
	int FrequencyArray[MAX_SIZE_OF_ARRAY] = { 0 };
	int CharCount = 0, WordLength = 0, WordCount = 0;
	char ch;
	float Average = 0;

	cout << "Enter words(press '0' to display table and perform calculation):" << endl;											//first round at receiving input from either the keyboard or a file
	cin.get(ch);

	while (ch != '0') {												//if the input is zero, it will exit the while loop and move to display the table

		if (isalpha(ch))												//checks to see if whatever is stored in ch is alphabetical and increments wordlength if it is
			WordLength++;

		else {
			CountValue(WordLength, CharCount, FrequencyArray);
			WordLength = 0;
		}

		cin.get(ch);

	}

	while ((ch != '1')) {
		cout << "Word Length    Frequency" << endl;

		for (int i = 1; i < MAX_SIZE_OF_ARRAY; i++) {
			cout << setw(6) << right << i << "     "
				 << setw(8) << right << FrequencyArray[i] << endl;
		}
		cout << "Enter 1 to exit the program." << endl;
		cin.get(ch);


		for (int i = 1; i < MAX_SIZE_OF_ARRAY; i++) {
			WordCount = WordCount + FrequencyArray[i];
		}

		Average = ((float)CharCount) / ((float)WordCount);
		cout << "The average word length is: " << Average << endl;


	}
	return 1;

}


	void CountValue( int &WordLength,  int &CharCount, int FrequencyArray[]) {
		const int MAX = 16;

		if (WordLength > 0) {
			if (WordLength >= (MAX))
				WordLength = MAX - 1;
		}
		FrequencyArray[WordLength]++;
		CharCount = CharCount + WordLength;
	}