#include <iostream>   
#include <algorithm>   
#include <vector>
#include <fstream>
#include <memory.h>   

using namespace std;
struct billion
{
    int no;
    char name[20];
    char account[6];
    int age;
    char company[20];
    char country[20];
};
ostream&  operator<<(ostream& os, billion &b)
{
    os << "编号" << '\t' << "姓名" << "\t\t" << "国家" << "\t\t" << "公司" << '\t' << "年龄" << '\t' << "资产" << endl;
    os << b.no << '\t' << b.name << '\t' << b.country << '\t' << << '\t' << b.age << '\t' << b.account << endl;
    return os;
}
class find_billion
{
private:
    billion b;
    char* country;
    int min;
    int max;
public:
    find_billion()
    {
        memset(this->country, NULL, sizeof(this->country));
        min = 0;
        max = 0;
    }
    find_billion(char *country, int min, int max)
    {
        this->country = country;
        this->min = min;
        this->max = max;
    }
    void operator()(billion b)
    {
        if (b.age > min && b.age < max && !strcmp(b.country, country))
        {
            cout << b << endl;
        }
    }
};
int main()
{
    ifstream in;
    in.open("d:\\billion.bin");
    vector<billion>v;
    billion b;
    in.read((char *)&b, sizeof(billion));
    while (!in.eof())
    {
        in.read((char *)&b, sizeof(billion));
        v.push_back(b);
    }

    find_billion bil = for_each(v.begin(), v.end(), find_billion("China", 60, 70));
    in.close();
    return 0;
}