Hey here the REF keyword is the same as a pointer in c++, right?

Question

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

namespace SoloLearn
{
class Program
{
static void Sqr(ref int x)
{
x = x * x;
}
static void Main(string[] args)
{
int a = 3;
Sqr(ref a);

Console.WriteLine(a);
}
}
}

Answer 1

The C++ definition that matches that C# ref is:
void Sqr(int &x) { x = x * x; }

The C++ call that matches is:
Sqr(a);

It could be done with pointers, but that wouldn't be identical. You would need to do the following:
void Sqr(int *x) { *x = *x * *x; }

Sqr(&a);