题目集 打印沙漏

# include <stdio.h>

int main()
{
	int sum,n,row;
	char ch;
	
	scanf("%d %c",&n,&ch);
	
	while ((2*row*row-1)<=n)
		row++;
	
	sum=2*--row*row-1;
	
	for (int i=0;i<row;i++)
	{
		for (int j=0;j<i;j++)
			printf(" ");
		for (int j=0;j<2*row-1-i*2;j++)
			printf("%c",ch);
		printf("\n");
	}
	
	for (int i=row-2;i>=0;i--)
	{
		for (int j=0;j<i;j++)
			printf(" ");
		for (int j=0;j<2*row-1-i*2;j++)
			printf("%c",ch);
		printf("\n");
	}
	
	printf("%d",n-sum);
	
	return 0;
}