Why does an error pop up when declaring an array?

Question

C++ / C#

#include "pch.h"
#include <iostream>
using namespace std;

int main()
{
  int count;
  cout << "Enter the amount of numbers \n";
  cin >> count;
  int arrayNumber[count]; // ошибка здесь
}

Error - expression is not defined by a constant. At the same time, the code is launched in the cpp.sh
compiler . Why such a discrepancy in the results?

Answer 1

HZ what kind of compiler cpp.sh is there, but you cannot create an array on the stack of an indefinite size at the compilation stage.
Use new and allocate as much as you need on the heap.