题解 | #牛牛的字符矩形#傻瓜式解法

int main()
{
	char a = 0;
	int b = 0;
	scanf("%c", &a);
	while (b < 3)
	{
		printf("%c", a);
		b++;
	}
	printf("\n");
	while (b < 6)
	{
		printf("%c", a);
		b++;
	}
	printf("\n");
	while (b < 9)
	{
		printf("%c", a);
		b++;
	}
	return 0;
}