You can only initialize array on declaration for stack variables

initarray.cpp

#include <iostream>

using namespace std;


int main()
{
    // initialize stack array variable
    int x[] = {1, 3, 4};
    int b[][2] = {{1, 2}, {3, 4}};


    // heap array variable can't assign initial value
    int* a = new int[5]{1, 3, 5, 7, 9}; // compiler error
}