#include <stdio.h>

void print_indentation( int, int );

int main() {

  printf( "\n" );

  print_indentation( 1, 5 );

  printf( "\n" );
  return 0;
}

void print_indentation( int start, int stop ) {
  int i;

  if ( start == stop ) {
    return;
  }

  for ( i = 0; i < start; i++ ) {
    printf( "   " );
  }
  printf( "before %d\n", start );

  print_indentation( start + 1, stop );

  for ( i = 0; i < start; i++ ) {
    printf( "   " );
  }
  printf( "after  %d\n", start );

  return;
}