#include <iostream>

#include <string>

#include <vector>

#include <algorithm>

class Stu {

public:

Stu() {

}

Stu(int age, std::string name) : m_age(age), m_name(name) {

}

~Stu() {

}

public:

int m_age;

std::string m_name;

};

bool compare_stu(Stu ele1, Stu ele2) {

return (ele1.m_age > ele2.m_age);

}

int main(int argc, char* argv[]) {

Stu stu1(23, "zhangsan");

Stu stu2(31, "alice");

Stu stu3(57, "jack");

Stu stu4(12, "bob");

Stu stu5(38, "wangwu");

std::vector<Stu> stus;

stus.push_back(stu1);

stus.push_back(stu2);

stus.push_back(stu3);

stus.push_back(stu4);

stus.push_back(stu5);

for (std::vector<Stu>::iterator it = stus.begin(); it != stus.end(); it++) {

std::cout << it->m_age << ", " << it->m_name << std::endl;

}

std::cout << "-----------------------------------------------" << std::endl;

std::sort(stus.begin(), stus.end(), compare_stu);

for (std::vector<Stu>::iterator it = stus.begin(); it != stus.end(); it++) {

std::cout << it->m_age << ", " << it->m_name << std::endl;

}

return 0;

}