Reverse vowels in a given string_geeks

#include <iostream>
#include<string>
#include<string.h>
#include<algorithm>
#include<vector>
using namespace std;


bool check(char c)
{
    return (c == 'u'||c=='e'||c == 'o'||c=='a'||c=='i') ? true:false;
}
int main() {

    int t;cin>>t;cin.ignore();
    while (t--)
    {
        string s;cin>>s;int k = 0;
        string t ="";
        for (int i = 0; s[i] != '\0'; i++)
        {
            if(check(s[i])) t+= s[i];
        }
        for (int i = 0,j = t.length()-1; s[i] != '\0'; i++)
        {

            if (check(s[i])&&j >= 0)
            {
                cout<<t[j--];

            }
            else
            {
                cout<<s[i];
            }
        }
        cout<<endl;

    }
    return 0;
}