Selection Sort in C++

#include<bits/stdc++.h>
using namespace std;
#define nl '\n'


int main(){
    int n = 10 , arr[n]={6,2,12,23,11,56,85,41,203,101};
    int indxMin,temp;

    cout<<"Before Sorting"<<nl;
    for (int i = 0; i < n ; i++ ){
        cout<<arr[i]<<" ";
    }
    cout<<nl<<nl;

    for (int i = 0; i < n-1 ; i++ ){
        indxMin = i;
        for (int j = i+1; j < n ; j++ ){
            if(arr[j] < arr[indxMin]){
                    indxMin = j;
            }
        }
        if(indxMin != i){
            temp = arr[i];
            arr[i] = arr[indxMin];
            arr[indxMin] = temp;
        }
    }

    cout<<"After Sorting"<<nl;
    for (int i = 0; i < n ; i++ ){
        cout<<arr[i]<<" ";
    }

    return 0;
}