C++中 vector容器的神奇用法

1.可以用简单的数据类型作为参数：

#include <iostream>
#include <vector>

using namespace std;

int main() {
    vector<int> data;
    data.push_back(1);
    data.push_back(5);
    for (int i = 0; i < data.size(); i++) {
        cout << data[i] << " ";
    }
    system("pause");
    return 0;
}

 2.也可以用一个类作为参数：

Boy.h：

#pragma once
#include <string>
using namespace std;
class Girl;
class Boy
{
public:
    Boy();
    Boy(int age,string name,int salary);
    int getAge()const;
    string getName()const;
    int getSalary()const;
    bool isSatisfied(const Girl& girl)const;
    string description()const;
    ~Boy();
private:
    int age;
    string name;
    int salary;

};

Girl.h：

#pragma once
#include <iostream>
using namespace std;
class Boy;
class Girl
{
public:
    Girl();
    Girl(string name,int age,int faceScore);
    int getAge()const;
    string getName()const;
    int getFaceScore()const;
    bool isSatisfied(const Boy& boy)const;
    string description()const;
    ~Girl();
private:
    int age;
    string name;
    int faceScore; //颜值
};

Boy.cpp：

#include <sstream>
#include "Boy.h"
#include "Girl.h"
#define SALARY_FACTORY 0.01
Boy::Boy()
{
    age = 0;
    name = "";
    salary = 0;
}
Boy::Boy(int age, string name, int salary) {
    this->age = age;
    this->name = name;
    this->salary = salary;
}
int Boy::getAge()const {
    return age;
}
string Boy::getName() const {
    return name;
}
int Boy::getSalary()const {
    return salary;
}
bool Boy::isSatisfied(const Girl& girl)const {
    if (girl.getFaceScore() >= salary * SALARY_FACTORY) {
        return true;
    }
    else
    {
        return false;
    }
}
string Boy::description()const {
    stringstream ret;
    ret << name << "-男-薪资(" << salary << ")-年龄(" << age << ")";
    return ret.str();
}
Boy::~Boy() {

}

Girl.cpp：

#include "Girl.h"
#include "Boy.h"
#include <sstream>
#define FACESCORE_FACTORY 1

Girl::Girl() {
    name = "";
    age = 0;
    faceScore = 0;
}
Girl::Girl(string name, int age, int faceScore) {
    this->name = name;
    this->age = age;
    this->faceScore = faceScore;
}
int Girl::getAge()const {
    return age;
}
string Girl::getName()const {
    return name;
}
int Girl::getFaceScore()const {
    return faceScore;
}
bool Girl::isSatisfied(const Boy& boy)const {
    if (boy.getSalary() >= faceScore * FACESCORE_FACTORY) {
        return true;
    }
    else
    {
        return false;
    }
}
string Girl::description()const {
    stringstream ret;
    ret << name << "-女-颜值(" << faceScore << ")-年龄(" << age << ")";
    return ret.str();
}
Girl::~Girl() {
    
}

主函数main.cpp：

#include <iostream>
#include <vector>
#include "Girl.h"
#include "Boy.h"

using namespace std;

int main() {
    Boy boy1(26,"小刘",25000);
    Boy boy2(24,"小王",15000);
    Girl girl1("小花",25,13000);
    Girl girl2("小美", 23, 10000);
    vector<Boy> boys;
    vector<Girl> girls;
    boys.push_back(boy1);
    boys.push_back(boy2);
    girls.push_back(girl1);
    girls.push_back(girl2);
    for (int i = 0; i < boys.size(); i++) {
        cout << boys[i].description() << endl;
    }
    for (int j = 0; j < girls.size(); j++) {
        cout << girls[j].description() << endl;
    }
    system("pause");
    return 0;
}

最后的实现结果：