Insertion sort using c++

insertion_sort.cpp

/*
Created By Ariful Islam
Student of Dhaka Internationa University
Learn how does work this sort https://visualgo.net/en/sorting
*/


#include<iostream>

using namespace std;

int main(){

    int arr[100], p, i, j, temp, n;
    cout<<"How many number you want?\n";
    cin>>n;
    cout<<"Input "<<n<<" numbers\n";
    for(p=0; p<n; p++){
        cin>>arr[p];
    }

    for (i = 1; i < n; i++)
   {
       temp = arr[i];
       j = i-1;

       while (j >= 0 && arr[j] > temp)
       {
           arr[j+1] = arr[j];
           j--;
       }
       arr[j+1] = temp;
   }
//output
    for(p=0; p<n; p++){
        cout<<arr[p];
    }

return 0;
}