import java.util.Scanner; public class Main{ public static void main(String []args){ Scanner sc = new Scanner(System.in); int num1 = sc.nextInt(); int num2 = sc.nextInt(); System.out.printf("%d+%d=%d\n",num1,num2,num1 + num2); System.out.printf("%7d\n",num1); System.out.printf("+%6d\n",num2); System.out.printf("-------\n"); System.out.printf("%7d",num1 + num2); } }这道题最主要就是打印格式,根据格式来确定d前面的数字。