#include <iostream>
#include <string>


using namespace std;

int main()
{
	int count = 0;
	string s;


	cout << "enter some text" << endl;
	getline(cin, s);

	for (int i = 0; i < s.length; i++)
	{
		switch (s.at(i))
		{
		case 'a':
			count++;
			break;
		case 'e':
			count++;
			break;
		case 'i':
			count++;
			break;
		case 'o':
			count++;
			break;
		case 'u':
			count++;
			break;
		default:
		}

	}

	cout << "The number of variables in this sentence is " << count << endl;

	system("pause");
	return 0;
}