mergetwosortedarrays

#include<iostream>
using namespace std;

void mergeArrays(int arr1[], int arr2[], int n1,
                             int n2, int arr3[])
{
    int i = 0, j = 0, k = 0;
    while (i<n1 && j <n2)
    {
        if (arr1[i] < arr2[j])
            arr3[k++] = arr1[i++];
        else
            arr3[k++] = arr2[j++];
    }
    while (i < n1)
        arr3[k++] = arr1[i++];
    while (j < n2)
        arr3[k++] = arr2[j++];
}
int main()
{
    int n1,n2;
    cin>>n1>>n2;
    int arr1[n1],arr2[n2];
    for(int i=0;i<n1;i++){
    cin>>arr1[i];
    }
 for(int i=0;i<n2;i++){
    cin>>arr2[i];
    }

    int arr3[n1+n2];
    mergeArrays(arr1, arr2, n1, n2, arr3);

    cout << "Array after merging into one" <<endl;
    for (int i=0; i < n1+n2; i++)
        cout << arr3[i] << " ";

    return 0;
}