#include <stdio.h>

main()
{
	int digit;
	int number;

	printf("Input the number: ");
	digit = (int) getchar() - 48;

	for (number = 0; (digit >= 0) && (digit <= 9); ) {

		number = number * 10 + digit;
		digit = (int) getchar() - 48;
	}

	printf("The number is: ");
	printf("%d\n", number);
}