【c】 Digital bomb

void game()
{
	int b = 0;
	int let = 0;
	let=rand()%100+1;
	int left = 0;
	int right = 100;

	while (b != let)
	{
		
		printf(" Guess the number >:");
		(void)scanf("%d", &b);
		/*Sleep(1000)*/;
		system("CLS");
		if (b < let && b>left)
		{
			left = b;
			printf(" Less than the number of bombs \n The scope is %d-%d\n",left,right);
			
		}

		else if (b > let && b<right)
		{
			right = b;
			printf(" Larger than the number of bombs \n The scope is %d-%d\n", left, right);
		}
		/*if (b <= left || b >=right)*/
		else if(b>right||b<left)
			printf(" Out of range, please input again \n The scope is %d-%d\n", left, right);
		
	}
	printf("\ngame over\n");
}

void menu()
{
	printf("*******************************\n");
	printf("*****  1.play   0.exit  *******\n");
	printf("*******************************\n");
}
int main()
{
	srand((unsigned int)time(NULL));
	int input = 0;
	do
	{
		menu();
		printf(" Please select >:");
		(void)scanf("%d", &input);

		switch (input)
		{
		case 1:
			game();
			break;
		case 0:
			printf(" Quit the game \n");
			break;
		default:
			printf(" Wrong choice \n");
			break;
		}

	} while (input);

	return 0;
}