Pyramid Recursive

#include <stdio.h>

void printDash(int count)
{
  if (count <= 0)
    return;

  printf("_");

  printDash(count - 1);
}

void printRange(int start, int end)
{
  if (start > end) {
    printf("\n");

    return;
  }

  printf("%i", start);

  printRange(start + 1, end);
}

void draw(int count, int start, int end)
{
  if (count <= 1) {
    printDash(start - 1);
    printRange(start, end);

    return;
  }

  printDash(start - 1);
  printRange(start, end);

  draw(count - 1, start - 1, end);

  printDash(start - 1);
  printRange(start, end);
};

void recursiveTriangle(int N)
{
  draw(N - N/2, N, N);
}

int main()
{
  recursiveTriangle(9);

  recursiveTriangle(6);

  return 0;
};