#include <stdio.h>
void triangle (int, int, int);

int main ()
{
  int h, d, s;
  printf("please enter the triangle's height:");
  if((!scanf("%d",&h))||h<2)
  {
    printf("Error. Height must be at least 2 \n");
    return 0;
  }
  printf("please enter number of $:");
  if(!(scanf("%d",&d))||d<1)
  {
    printf("Error. Number of $ must be at least 1\n");
    return 0;
  }
  printf("please enter number of spaces:");
  if(!(scanf("%d",&s))||s<1)
  {
    printf("Error. Number of spaces must be at least 1\n");
    return 0;
  }

  triangle(h, s, d);

  printf("height: %d \n", h);
  printf("number of $: %d \n", d);
  printf("number of spaces: %d \n", s);

  return 0;
}

void triangle (int h, int spaces, int dollars)
{
  int i, j, space, cntD=0, cntC=0;
  for (i=0; i<h-1; i++)
    printf(" ");
  printf ("*\n");

  space=(h-2);
  for (i=2; i<h; i++)
  {
    for (j=0; j<space; j++)
      printf(" ");
    space--;
    printf("*");
    for (j=0; j<((i*2)-3); j++)
    {
      if (cntD<dollars)
      {
    printf("$");
    cntD++;
    continue;
      }

      if (cntC<spaces && cntD==dollars)
    {
      printf(" ");
      cntC++;
    }

      if(cntC==spaces)
      {
    cntC=0;
    cntD=0;
      }
    }
    printf("*\n");
  }
  for (i=0; i<((h*2)-1); i++)
    printf("*");
  printf("\n");
}