merging_array.cpp

#include<bits/stdc++.h>
using namespace std;

void MergeArray(int a[],int b[],int arr[],int n1,int n2)
{
//int arr[n1+n2];
    int i=0,j=0,k=0;
    while(n1>i)
    {
        arr[k] = a[i];
        i++;
        k++;
    }
    while(n2>j)
    {
        arr[k]=b[j];
        j++;
        k++;   
    }
    // sort function arrays
    sort(arr,arr+n1+n2);
}

int main()
{
   int n1;
   cin>>n1;
   int a[n1];
   for(int i=0; i<n1; i++)
   {
       cin>>a[i];
   }
   
   int n2;
   cin>>n2;
   int b[n2];
   for(int i=0; i<n2; i++)
   {
       cin>>b[i];
   }
   int arr[n1+n2];
   MergeArray(a,b,arr,n1,n2);
// merging tow arrays
cout<<"arrays are ->";
for(int i=0;i<n1+n2;i++)
{
    cout<<" "<<arr[i]<<" ";   
}
    return 0;     
}