View Code of Problem 132

#include <string>
#include <cstdio>
#include <iostream>
#include <sstream>
using namespace std;
struct num{
	string before;
	string behind;
};

string opstring(string h,string r){
	int rlen=r.length();
	int hlen=h.length();
	int flag=0;
	int pos=0;
	for(int i=rlen-1;i>=0;i--){
		if(r[i]-'0'!=0){
			flag=1;
			pos=i;
			break;
		}
	}
	if(!flag){
		return h;
	}
	else{
//		cout<<r.substr(0,pos)<<endl;
		return h+"."+r.substr(0,pos+1);
	}
}

int main(){
	string s1,s2;
	while(cin>>s1>>s2){
		stringstream ss1(s1);
		stringstream ss2(s2);
		string temp;
		num a,b;
		int count1=0;
		while(getline(ss1,temp,'.')){
			if(count1==0){
				a.before=temp;
				count1++;
			}
			else if(count1==1){
				a.behind=temp;
			}
		}
		int count2=0;
		while(getline(ss2,temp,'.')){
			if(count2==0){
				b.before=temp;
				count2++;
			}
			else if(count2==1){
				b.behind=temp;
			}
		}
		int ahlen=a.behind.length();
		int bhlen=b.behind.length();
		
		if(ahlen>bhlen){
			int deta=ahlen-bhlen;
			for(int i=0;i<deta;i++){
				b.behind+="0";
			}
			bhlen=ahlen;
		}
		if(ahlen<bhlen){
			int deta=bhlen-ahlen;
			for(int i=0;i<deta;i++){
				a.behind+="0";
			}
			ahlen=bhlen;
		}
		num res; 
		int add=0;
		for(int i=ahlen-1;i>=0;i--){
			int aa=a.behind[i]-'0';
			int bb=b.behind[i]-'0';
			int kk=aa+bb+add;
			if(kk>9){
				add=kk/10;
			}
			else{
				add=0;//位清空 
			}
			res.behind=to_string(kk%10)+res.behind;
			
		}
		
		int aqlen=a.before.length();
		int bqlen=b.before.length();
		
		if(aqlen>bqlen){
			int deta=aqlen-bqlen;
			for(int i=0;i<deta;i++){
				b.before="0"+b.before;
			}
			bqlen=aqlen;
		}
		if(aqlen<bqlen){
			int deta=bqlen-aqlen;
			for(int i=0;i<deta;i++){
				a.before="0"+a.before;
			}
			aqlen=bqlen;
		}
		for(int i=aqlen-1;i>=0;i--){
			int aa=a.before[i]-'0';
			int bb=b.before[i]-'0';
			int kk=aa+bb+add;
			if(kk>9){
				add=kk/10;
			}
			else{
				add=0;//位清空 
			}
			res.before=to_string(kk%10)+res.before;
			if(i==0&&add!=0){
				res.before=to_string(add)+res.before;
			}
			
		}
//		cout<<res.before<<":"<<res.behind;
		string final=opstring(res.before,res.behind);	
		cout<<final<<endl;
	}
	return 0;
}