#include <iostream>
using namespace std;

int get_odd_number( int n, int m )
{
  int x = 0;
  while ( x < n  ||  x > m  ||  x % 2 == 0 ) {
    cout << "Enter odd int in range [" << n << '-' << m << "]: ";
    cin >> x;
  }
  return x;
}

void print_row( int s, int n, char c )
{
  for ( int i = 0 ; i < s ; i++ ) cout << ' ';
  for ( int i = 0 ; i < n ; i++ ) cout << c;
  cout << endl;  // could be in main() [-2 if nowhere]
}

int get_trunk_height( int number )
{
    return 1 + number / 9;
}

int main()
{
    int number = get_odd_number( 7, 29 );

    int spaces = 18;
    for ( int r = 1 ; r <= number ; r += 2 )
    {
        print_row( spaces, r, '^' );
        spaces--;
    }

    int h = get_trunk_height( number );
    for ( int r = 0 ; r < h ; r++ )
    {
        print_row( 17, 3, '|' );
//        for ( int i = 0 ; i < 17 ; i++ ) cout << ' ';
//        cout << "|||\n";
    }

    return 0;
}