C++构造函数与析构函数

Account.h

#include <iostream>
#include "string.h"
using namespace std;
class Account {
public:
    int id;
    char name[20];
    int money;
public:
    //构造函数：分配内存时自动调用
    Account();

    Account(int id, char name[], int money);
    //析构函数：释放内存时自动调用
    //~Account();
    ~Account();
};

Account.cpp

#include <iostream>
#include "Account.h"
//给char字符数组赋值需要使用strcpy()函数 #include <string.h>头文件中定义
//string字符串   #include <string>
#include "string.h"

using namespace std;
Account::Account() {
    cout<<"无参构造函数被调用"<<endl;
}
//构造函数初始化列表  字符数组不能使用
Account::Account(int id, char name[], int money) : id(id), money(money) {
    strcpy(this->name,name);
    cout<<"三个参数的构造函数被调用"<<this->name<<endl;
}

Account::~Account() {
    cout<<this->name<<"的内存被释放了"<<endl;
}
//Account::~Account() {
    //cout<<this->name<<"的内存被释放了"<<endl;
//}

TestAccount.cpp

#include <iostream>
#include "Account.h"
#include "string.h"
using namespace std;
int main() {
    Account zhangsan;//栈中
    strcpy(zhangsan.name,"zhangsan");
    cout<<"张三创建成功"<<endl;
    Account lisi(2,"lisi",5000);
    Account *wangwu;//堆中
    wangwu = new Account(1,"wangwu",2000);
    delete wangwu;
    return 0;
}