Merge Two Arrays in C++

1#include <iostream>
2using namespace std;
3
4int main() {
5    int arr1[] = {1, 2, 3};
6    int arr2[] = {4, 5, 6};
7    int n1 = 3, n2 = 3;
8    
9    int merged[n1 + n2];
10    
11    // Copy first array
12    for (int i = 0; i < n1; i++) {
13        merged[i] = arr1[i];
14    }
15    
16    // Copy second array
17    for (int i = 0; i < n2; i++) {
18        merged[n1 + i] = arr2[i];
19    }
20    
21    cout << "Merged array: ";
22    for (int i = 0; i < n1 + n2; i++) {
23        cout << merged[i] << " ";
24    }
25    cout << endl;
26    
27    return 0;
28}