/***************
1. In the following program, replace the iterative function by an equivalent recursive function:

#include<iostream>
using namespace std;

void iterative_fn(int n);
int main() {
  int n;
  cout<<"Enter a positive  int\n";
  cin>>n;
  cout<<"\n";
  iterative_fn(n);

}
void iterative_fn(int n){
   for (int i=n; i>0;i--){
     cout<<i<<endl;
   }
}
******************************************/

#include<iostream>
using namespace std;

void iterative_fn(int n);
void recursive_fn(int n);

int main() {
  int n;
  cout<<"Enter a positive  int\n";
  cin>>n;
  if(n<=0){
    cout<<"You must enter a positive int\n";
    exit(1);
  }
  else{
    cout<<"\n";
    iterative_fn(n);
    cout<<endl;
    recursive_fn(n);
  }
}


void iterative_fn(int n){
   for (int i=n; i>0;i--){
     cout<<i<<endl;
   }
}

void recursive_fn(int n){
  if(n==1){
    cout<<n<<endl;
  }
  else {
    cout<<n<<endl;
    recursive_fn(n-1);
  }
}