How would one go about replacing all the vowels from the user input with a single character?

Question

How would one go about replacing all the vowels from the user input with a single character?

For example, a user input of:
Hello world!

Would be turned into:
H*ll* w*rld

Answer 1

This is what I came up with. I didn't do the user input part and i only did it for lowercase vowels but it should be easy enough to add that.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace SoloLearn
{
class Program
{

static void Main(string[] args)
{
char newchar = '*';
char[] vowels = {'a','e','i','o','u'};
string phrase = "Hello world!";

Console.WriteLine(phrase);

for (int x=0;x<phrase.Length; x++)
{
for(int y=0;y<vowels.Length; y++)
{
if (phrase[x] == vowels[y])
{
phrase = phrase.Replace(phrase[x], newchar);
}
}
}
Console.WriteLine(phrase);
}
}
}

Answer 2

in what language?

Answer 3

C#