HDOJ1002： A + B Problem II

Problem Description

I have a very simple problem for you. Given two integers A and B, your job is to calculate the Sum of A + B.

 

Input

The first line of the input contains an integer T(1<=T<=20) which means the number of test cases. Then T lines follow, each line consists of two positive integers, A and B. Notice that the integers are very large, that means you should not process them by using 32-bit integer. You may assume the length of each integer will not exceed 1000.

 

Output

For each test case, you should output two lines. The first line is "Case #:", # means the number of the test case. The second line is the an equation "A + B = Sum", Sum means the result of A + B. Note there are some spaces int the equation. Output a blank line between two test cases.

 

Sample Input

21 2112233445566778899 998877665544332211

 

Sample Output

Case 1:1 + 2 = 3Case 2:112233445566778899 + 998877665544332211 = 1111111111111111110

Java Code：

import java.math.BigInteger;import java.util.Scanner;public class Main {public static void main(String[] args){int count=1;Scanner sc=new Scanner(System.in);int T=sc.nextInt();while(T-->0){String str1=sc.next();String str2=sc.next();BigInteger a=new BigInteger(str1);BigInteger b=new BigInteger(str2);System.out.println("Case "+count+":");System.out.println(a+" + "+b+" = "+a.add(b));count++;if(T!=0){System.out.println();}}}}