hi

#include<bits/stdc++.h>

using namespace std;

  int partition(int *a,int start,int end)

    {

      int pivot=a[end];

      int P_index=start;

      int i,t; 

    for(i=start;i<end;i++)

    if(a[i]<=pivot)

        }

      {  

       t=a[i];

      a[i]=a[P_index]; 

      a[P_index]=t; 

      P_index++;

       }

   void Quicksort(int *a,int start,int end)

      {

        if(start<end)

        {

          int P_index-partition(a,start,end); 

          Quicksort(a,start,P_index-1); 

          Quicksort(a,P_index+1,end);

        }

        }

    int main()

        {

          int n;

          cout<<"Enter number of elements: "; 

          cin>>n;

            int a[n];

            cout<<"Enter the array elements: \n";

            for(int i=0;i<n;i++)

                {

                  cin>>a[i];

                  }

           Quicksort(a,0,n-1);

            cout<<"After Quick Sort the array is: \n";

          for(int i=0;i<n;i++)

      {

          cout<<a[i]<<"";

        }

        return 0;

  }