HDU 1047 Integer Inquiry

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370370367037037036703703703670

大数相加问题：

#include<string.h>
#include<stdio.h>
#include<stdlib.h>
char str[105],sum[105],ssum[105];
int main(){
	char c;
	int len,i,flag,slen,k,j;
	//memset(sum,'0',sizeof(sum));
	flag=1;
	while(~scanf("%s",str)){
		len=strlen(str);
		if(len==1&&str[0]=='0')  break;
		if(flag){
			strcpy(sum,str);
			flag=0;
		} 
		else{
			slen=strlen(sum);
			for(k=0;len>=0||slen>=0;len--,slen--,k++){  
	            if(len>=0&&slen>=0) 
					ssum[k]=str[len]+sum[slen]-'0'+c;  
	            if(len<0&&slen>=0) 
					ssum[k]=sum[slen]+c;  
	            if(len>=0&&slen<0) 
					ssum[k]=str[len]+c;  
	            c=0;          //进位加上之后要清零  
	            if(ssum[k]>'9'){ 
					ssum[k]-=10;  
					c=1; 
				}  
			}
			if(c==1) ssum[k]='1';
			for(i=strlen(ssum)-1,j=0;i>=0,j<strlen(ssum)-1;j++,i--){
				sum[j]=ssum[i];
			}
			//printf("%s\n",sum);
		}
	}
	
	printf("%s\n",sum);
	return 0;
} 

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

class Bigint {

        public static void main(String[] args) throws Exception{
                        String s1 = null;
                        BigInteger bint = null;
                        BufferedReader bin = new BufferedReader(new InputStreamReader(System.in));
                        s1 = bin.readLine();
                        while(!s1.equals("0"))
                        {
                                if(bint == null)
                                {
                                        bint = new BigInteger(s1);
                                }
                                else
                                {
                                        bint = bint.add(new BigInteger(s1));
                                }
                                s1 = bin.readLine();
                        }
                        if(s1.equals("0"))
                        {
                                System.out.println(bint.toString());
                        }
        }

}

HDU 1047 Integer Inquiry

原文：http://blog.csdn.net/jinjide_ajin/article/details/51366184