print rows of stars recursively

stars.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(char c, int num)
{
  if (num < 0)
    return;

  print_char(c, num);
  printf("\n");
  print_char_rows(c, --num);
}

int main(void)
{
  print_char_rows('*', 6);
}