How to convert int to const int to assign array size on stack?

Question

I am trying to allocate a fixed size on stack to an integer array

#include
using namespace std;

int main(){

    int n1 = 10;
          


        

Answer 1

Only fixed-size arrays can be allocated that way. Either allocate memory dynamically (int* foo = new int[N];) and delete it when you're done, or (preferably) use std::vector instead.

(Edit: GCC accepts that as an extension, but it's not part of the C++ standard.)