Lab task - (Function - 5)

#include <bits/stdc++.h>

#define ll long long
#define ull unsigned long long
#define uom unordered_map
#define pb push_back
#define yes cout<<"YES\n"
#define no cout<<"NO\n"

#define dot(x) fixed<<setprecision(x)
#define wrench786 ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);

#define PI (acos(-1.0))
#define eps 0.00001
const int LIMIT = 10000*1;
const int mod = 1000000007;
using namespace std;


int* fun( int *arr,int n,int data)
{
    for(int i=0,j=0;i<n;i++,j++){
        if(arr[i]==data)j--;
        else arr[j]= arr[i];
    }

    return arr;
}

int main(){
    int n,i,data;
    cin>>n;
    int arr[n];

    for(i=0;i<n;i++) cin>>arr[i];

    cin>>data;

    int* ptr = fun(arr,n,data);

    for(i=0;i<n-1;i++){
        cout<<*(ptr+i)<<" ";
    }
}