#include <stdio.h>

main()
{
	printf("Let's calculate!\n"); 
	printf("1234 + 4321 =  %5d\n", 1234 + 4321);
	printf("2*3.1415*10 =  %7.1f\n", 2*3.1415*10);
	printf("5/2 = %d\n", 5/2); /* integer division */
	printf("5.0/2 = %f\n", 5.0/2); /* type conversion */
	printf("5%%2 = %d\n", 5%2); /* mod operaion */
}