pyramid_snippet.cpp

#include <stdio.h>
#include <stdbool.h>

int main()
{
	int i, n, stars;
	int spaces;
	char c;

	scanf_s("%d%c", &n, &c);

	n *= 2;

	for (stars = 0; stars < n; stars++)
	{
		if (stars % 2 == 0)
			continue; // see line 12

		spaces = (n - stars) / 2;

		for (i = 0; i < spaces; i++)
			printf(" "); //padding before stars

		for (i = 0; i < stars; i++)
			printf("*");

		printf("\n");
	}

	getchar();
	getchar();

	return true;
}

pyramid_snippet_redux.cpp

#include <stdio.h>
#include <stdlib.h>

int main()
{
	int i, n, stars;
	int spaces;
	int isoneorzero = 0;
	char c;

	scanf_s("%d%c", &n, &c);
	system("cls");

	n *= 2;

	for (stars = 0; stars < n; stars++)
	{
		if (stars % 2 == 0)
			continue; // see line 12

		spaces = (n - stars) / 2;

		for (i = 0; i < spaces; i++)
			printf(" "); //padding before stars

		for (i = 0; i < stars; i++)
		{
			isoneorzero = !isoneorzero;
			printf("%d", isoneorzero);
		}

		printf("\n");
	}

	getchar();
	getchar();

	return 1;
}