/* simple program
function~ by  P'Yutaka 
http://bruna.zive.net/~yutaka/main.c*/
#include <stdio.h>

void putstars(int base, int number);
void main()
{
	
	int num, start, i,j;

	printf("input:");
	scanf("%d", &num);

	
	start = num%2 +1;

	for(i = start; i < num; i += 2)
	{
		putstars(num, i);
	}


	for(j = i-4;j > 0; j -= 2)
	{
		putstars(num, j);
	}

 }

void putstars(int base, int number)
{
	int i,spaces;

	spaces = (base - number)/2;

	for(i = 0; i < spaces; i++)
	{
		printf(" ");
	}
	
	for(i = 0; i < number; i++)
	{
		printf("*");
	}
	
	for(i = 0; i < spaces; i++)
	{
		printf(" ");
	}
	printf("\n");
}