print stars with spacing

stars-with-spacing.c

#include<stdio.h>


void print_char(char c, int num)
{
  if (num <= 0)
    return;

  printf("%c", c);
  print_char(c, --num);
}

void print_char_rows_with_index(char c, int start, int end)
{
  if (start >= end)
    return;

  int spacing = end - start;
  
  print_char(' ', spacing);
  print_char(c, start);
  printf("\n");
  
  print_char_rows_with_index(c, ++start, end);
}

void print_char_rows(char c, int num)
{
  print_char_rows_with_index(c, 1, num);
}

int main(void)
{
  print_char_rows('*', 7);
}

  *
 **
***

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