print stars recursively

start-correct.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;

  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, 0, num);
}

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