hdu 1002 A + B Problem II

http://acm.hdu.edu.cn/showproblem.php?pid=1002

大整数加法：

View Code

 1  import java.util.*;
 2 import java.math.*;
 3  public class Main{
 4      
 5   public static void main(String args[]){
 6       
 7       Scanner cin = new Scanner(System.in) ;
 8       int T  =  cin.nextInt() ;
 9       int cas = 0 ;
10       while(T != 0){
11           T-- ;
12          // BigInteger sum  = new BigInteger("0") ;
13           String  str1 = cin.next(),str2 = cin.next();
14           BigInteger a = new BigInteger(str1) ,b = new BigInteger(str2) ;
15           ++cas ;
16           System.out.println("Case "+cas+":");
17           
18          
19           System.out.println(a+" + "+b +" = "+a.add(b)) ;
20           
21           if(T != 0) System.out.println() ;
22           
23           
24           
25       }
26       
27   }
28      
29  }