#include <stdio.h>
	void main()
	{
	printf("Let's calculate! ");
	printf("1234 + 4321 = %5d ", 1234 + 4321);
	printf("2 * 3.1415 = %7.1f ", 2 * 3.1415);
	printf("5 / 2 = %d ", 5 / 2); /* integer division */
	printf("5.0 / 2 = %f ", 5.0 / 2); /* type conversion */
	printf("5 %% 2 = %d ", 5 % 2); /* mod operaion */
	}