I am a Uni student and when I try to do this

#include <iostream>
using namespace std;

int main()
{
    int L1,L2,L3;
    cout << "Lenght of the first Array: ";
    cin >> L1;
    cout << "Lenght of the second Array: ";
    cin >> L2;
    L3 = L1 + L2;
    int A1[L1], A2[L2], A3[L3];
    for (int x = 0; x < L1; x++) {
        cout << "Input a Number for space " << x + 1 <<" in array 1 :";
        cin >> A1[x];
    }
    for (int x = 0; x < L2; x++) {
        cout << "Input a Number for space " << x + 1 << " in array 2 :";
        cin >> A2[x];
    }
    for (int x = 0; x < L1; x++) {
        A3[x] = A1[x];
    }
    for (int x = L1; x < L3; x++) {
        A3[x] = A2[x- L1];
    }
    cout << "nAll the numbers in both arrays were: ";
    for (int x = 0; x < L3; x++) {
        cout << A3[x] << " ";
    }
}

It gives me an error only in Visual Studio 2022 on line 12 that int A1[**L1**], A2[**L2**], A3[**L3**]; the length i want to input need to be constant values

But when I try the code in other compilers it works fine

in other compilers it give me

Lenght of the first Array: 2
Lenght of the second Array: 2
Input a Number for space 1 in array 1 :1
Input a Number for space 2 in array 1 :2
Input a Number for space 1 in array 2 :3
Input a Number for space 2 in array 2 :4

All the numbers in both arrays were: 1 2 3 4

only in visual studio 2022 is this problem. IDK if the issue is the configuration or installation of VS2022 because I didn’t do it myself