HDU 1047 Integer Inquiry

JAVA水过

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

public class aa
{
	public static void main( String[]args )
	{
		Scanner cin=new Scanner(System.in);
		int t;
		cin.hasNextInt();
		t = cin.nextInt();
		for( int i = 1; i <= t; ++i )
		{
			BigInteger a,b,c;
			c = BigInteger.valueOf(0);
			b = c;
			while( cin.hasNextBigInteger() )
			{
				a = cin.nextBigInteger();
				if( a.intValue() == 0 )//这里不能直接=c，否则不过，必须转换成int
					break;
				b = b.add(a);
			}
			System.out.println( b );
			if( i != t )
				System.out.println();
		}
	}
}

大数相加模板题

#include<stdio.h>
#include<string.h>
const int Maxsize = 124;
int sum[Maxsize];
char num[Maxsize];
void cal(  )
{
     int len = strlen( num );
     int t = 0;
     for( int i = 0; i < len ; ++i )
     {
          sum[i] += ( t + num[len - i - 1] - '0' );//先相加 
          t = sum[i] / 10;//再进位 
          sum[i] %= 10;
      }
      while( t )//万一相加后位数比num数组长度达 
      {
             sum[len++] += t % 10;
             t /= 10;
             }
 }
int main( )
{
    int t;
    scanf( "%d",&t );
    int k = t;
    while( k-- )
    {
           memset( sum,0,sizeof( sum ) );
           while( scanf( "%s",num ),num[0]!= '0' )
                  cal(  );
           int len = Maxsize - 1;
           while( !sum[len] ) --len;//找长度 
           if( k != t - 1 )
               puts( "" );
           if( len < 0 )//特殊情况,不要漏了这一句 
               printf( "0" );
           else
               for( ; len >= 0; --len )
                    printf( "%d",sum[len] );
           puts( "" );
           }
    return 0;
}