Insertion in Array in C++

#include<iostream>
using namespace std;

int main(){
    //n is for total elements in array at this moment
    int arr[10]={2,3,5,6,7},pos,value,i,n=5;

    //n++ means n=6 and we put value 8 at sixth position
    arr[n++]=8;
    cout<<"8 added to last position..."<<endl;

    //here we shift all the value to next position
    //then at arr[0] mean at 1st position we put value 1
    //after that increase the element value by 1
    for(int i = n ; i > 0 ; i--){
        arr[i] = arr [i-1];
    }
    arr[0]=1;
    n++;
    cout<<"1 added to first position..."<<endl;

    //here at position 3 we put value 4

    pos = 3;
    value = 4;

    // shift all value form last position to the desired position
    for(int i = n ; i >= pos-1 ; i--){
        arr[i] = arr[i-1];
    }

    //puting value to the position
    //after that increase the element value by 1
    arr[pos-1] = value;
    n++ ;
    cout<<"4 added to third position..."<<endl;

    cout<<"\nThe new array"<<endl;
    //Printing the New Array after adding all new elements
    for (int i = 0; i < n; i++)
    {
        cout<<arr[i]<<" ";
    }



}