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

int main()
{
	int count = 0;
	char letter = 0;

	cout << "Enter a sentence: ";

	while (letter != '\n')
	{
		cin.get(letter);
		switch(toupper(letter))
		{
		case 'A':
		case 'E':
		case 'I':
		case 'O':
		case 'U':
		cout << letter << ", ";
		count++;
		}
	}

	cout << endl << endl;
	cout << "There are " << count << " vowels in this sentence." << endl << endl;

	return 0;

}