49 lines
937 B
C++
49 lines
937 B
C++
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// 基于 d3.cpp 的改进
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// vector 存放对象的指针
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#include <bits/stdc++.h>
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using namespace std;
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class Student
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{
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friend ostream &operator<<(ostream &out, const Student *stu);
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private:
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string name;
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int age;
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public:
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Student(const string &name, int age)
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{
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this->name = name;
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this->age = age;
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}
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};
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ostream &operator<<(ostream &out, const Student *stu)
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{
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out << "name: " << stu->name << ", age: " << stu->age;
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return out;
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}
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int main()
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{
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vector<Student *> v;
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v.push_back(new Student("张三", 18));
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v.push_back(new Student("李四", 19));
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v.push_back(new Student("王五", 20));
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v.pop_back(); // 删除最后一个元素
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// 创建迭代器
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vector<Student *>::iterator it = v.end();
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while (it != v.begin())
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{
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it--;
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cout << *it << endl; // 重载了<<运算符
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delete *it; // 释放空间
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}
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return 0;
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}
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