#include<stdio.h>
int main()
{
int countVowels(char *str)
{
    int count =0;
    for (int i=0;
    str[i] !='\0';i++)
    {
        char ch = v(str[i]);
        if (ch == 'a' || ch == 'e' || ch == 'i' || ch == '0' || ch == 'u')
        {
            count++;
        }
    }
}
}