Vowels&Consonants

#include <iostream>
#include <string>
using namespace std;
string getWord();
int getVowel(string word);
int getConsonants(string word);
int displayVowel(int& sum1);
int displayConsonants(int& sum2);

int main()
{
	string word;
	int sum1;
	int sum2;
	word = getWord();
	getVowel(word);
	getConsonants(word);
	displayVowel(sum1);
	displayConsonants(sum2);

	system("pause");
	return 0;
}
string getWord()
{
	string word;
	cout << "what is the word ";
	getline(cin, word);
	return word;
}
int getVowel(string word)
{
	int sum1 = 0;
	char temp;
	for (int i = 0; i < word.length(); i++)
	{
		if (isalpha(word.at(i)))
		{
			temp = word.at(i);
			temp = tolower(temp);
			if (temp == 'a' || temp == 'e' || temp == 'i' || temp == '0' || temp == 'u')
				sum1 += 1;
		}

	}
	return sum1;
}
int getConsonants(string word)
{
	int sum2 = 0;
	char temp;
	for (int i = 0; i < word.length(); i++)

		if (isalpha(word.at(i)))
		{
			temp = word.at(i);
			temp = tolower(temp);
			if (temp != 'a' && temp != 'e' && temp != 'i' && temp != '0' && temp != 'u')
				sum2 += 1;
		}
	return sum2;
}

int displayVowel(int& sum1)
{
	cout << "The total number of vowels are " << sum1 << endl;
	return sum1;
}

int displayConsonants(int& sum2)
{
	cout << "The total number of consonants are " << sum2 << endl;
	return sum2;
}