ZOJ 2727List the Books

[cpp]
#include<fstream>
#include<iostream>
#include<vector>
#include<algorithm>
#include<string>
using namespace std;
struct Book
{
    string Name;
    int Year;
    int Price;
};

bool CompName(const Book &b1,const Book &b2)
{
    if(b1.Name!=b2.Name)
        return b1.Name<b2.Name;
    else if(b1.Year!=b2.Year)
        return b1.Year<b2.Year;
    else
        return b1.Price<b2.Price;
}
bool CompYear(const Book &b1,const Book &b2)
{
    if(b1.Year!=b2.Year)
        return b1.Year<b2.Year;
    else if(b1.Name!=b2.Name)
        return b1.Name<b2.Name;
    else
        return b1.Price<b2.Price;
}
bool CompPrice(const Book &b1,const Book &b2)
{
    if(b1.Price!=b2.Price)
        return b1.Price<b2.Price;
    else if(b1.Name!=b2.Name)
        return b1.Name<b2.Name;
    else
        return b1.Year<b2.Year;
}
int main()
{
    //ifstream cin("acmilan.txt");
    vector<Book> v;
    Book book;
    string sorting;
    int n;
    int i;
    int line=0;
    while(cin>>n)
    {
        if(n==0)
            break;
        line++;
        v.clear();
        for(i=0;i<n;i++)
        {
            cin>>book.Name>>book.Year>>book.Price;
            v.push_back(book);
        }
        cin>>sorting;
        if(sorting=="Name")
            sort(v.begin(),v.end(),CompName);
        else if(sorting=="Year")
            sort(v.begin(),v.end(),CompYear);
        else if(sorting=="Price")
            sort(v.begin(),v.end(),CompPrice);
        if(line!=1)
            cout<<endl;
        for(i=0;i<v.size();i++)
        {
            cout<<v[i].Name<<" "<<v[i].Year<<" "<<v[i].Price<<endl;
        }

    }
    //system("pause");
    return 0;
}
作者：teibin

补充：软件开发 , C++ ,