View Code of Problem 53

#include<stdio.h>
void main()
{
	int n;
	scanf("%d", &n);
	for (int i = 0; i < n  ; i++)
	{
		for (int j = 1; j < 2 * n + 1; j++)
		{
			if ((j<n-i)||(j>n+i))
			{
				printf(" ");
			}
			else
			{
				printf("*");
			}
		}
		printf("\n");
	}
	for (int i = n-2; i >= 0 ; i--)
	{
		for (int j = 1; j < 2 * n + 1; j++)
		{
			if ((j < n - i) || (j > n + i))
			{
				printf(" ");
			}
			else
			{
				printf("*");
			}
		}
		printf("\n");
	}
}