水题 hdu1002------用BigInteger解决大数问题

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

2
1 2
112233445566778899 998877665544332211

 

Sample Output

Case 1:
1 + 2 = 3

 
 

Case 2:
112233445566778899 + 998877665544332211 = 1111111111111111110
 
 
 
 

import java.util.*;
import java.math.*;

public class Main3 {

	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);

		int t=Integer.parseInt(sc.next());
		for(int i=0;i<t;i++){
			BigInteger a=new BigInteger(sc.next());
			BigInteger b=new BigInteger(sc.next());
			BigInteger c=a.add(b);
			System.out.println("Case "+(i+1)+":");
			System.out.println(a+" "+"+"+" "+b+" "+"="+" "+c);
			if(i!=t-1)
			System.out.println();
		}

	}

}