score from chars in string

# include <iostream>
using namespace std;
#include <iomanip>
#include <math.h>
#include <cmath>
#include <string>
int main()
{
    string str;
    getline(cin, str);
    int b = str.length();
    int score=0;
    for (int i = 0; i < b; i++)
    {
        if (str[i] == 'a')
        {
            score = score + 1;
        }
        else if (str[i] == 'e')
        {
            score = score + 2;
        }
        else if (str[i] == 'i')
        {
            score = score + 3;
        }
        else if (str[i] == 'o')
        {
            score = score + 4;
        }
        else if (str[i] == 'u')
        {
            score = score + 5;
        }
    }
    cout << score << endl;
}