Count and list occurrences of alphabet letters using a cstring.

CountOccurrences.cpp

#include <iostream>
#include <cstdio>
#include <string>
using namespace std;

// can't remember, do I need to include cstring?

void count (string input) {
	// Setup arrays
	char alphabet[] = "abcdefghijklmnopqrstuvwxyz";
	int occurrences[26];

	// Initialize array with zeros
	for (int i = 0; i < 26; i++) {
		occurrences[i] = 0;
	}

	// Count characters
	for (int i = 0; i < input.length(); i++) {
		for (int j = 0; j < 26; j++) {
			// use tolower as our cstring is in lowercase
			if (tolower(input[i]) == alphabet[j]) {
				occurrences[j] += 1;
			}
		}
	}

	// Output
	for (int i = 0; i < 26; i++) {
		printf("%c: %d times\n", alphabet[i], occurrences[i]);
	}

}

int main () {
	string input;

	// Get entire line to avoid breakage
	cout << "Enter a string: ";
	getline(cin, input);

	// Call function
	count(input);

	return 0;
}