C++ 二进制文件的读写 实现类的序列化 20180317day8

#include<iostream>
#include"fstream"  
using namespace std;


/*二进制文件的读写 实现类的序列化*/


class Teacher{


public:
	Teacher()  //默认构造函数
	{
		this->age = 33;
		strcpy(name, "");
	}
	Teacher(int age, char *name)
	{
		this->age = age;
		strcpy(this->name, name);
	}
	void printf()
	{
		cout << "age=" << age << "\n name=" << name << endl;
	}
private :
	int age;  //年龄
	char name[30];   //姓名 采用数组形式  采用数组指针会变得很麻烦
};




int main()
{


	ofstream fpo("f://binary.txt", ios::binary);   //建立一个输出流对象和文件关联 以二进制方式打开文件


	if (fpo.fail())
	{
		cout << "文件读取失败" << endl;
	}


	Teacher t1(21, "t21"), t2(22, "t22");


	fpo.write((char *)(&t1), sizeof(Teacher));
	fpo.write((char *)(&t2), sizeof(Teacher));  //写入类

	fpo.close();

	ifstream fpi("f://binary.txt");

	if (fpi.fail())
	{
		cout << "文件读取失败" << endl;
	}
	Teacher t;
	fpi.read((char *)(&t),sizeof(Teacher));


	t.printf();


	fpi.read((char *)(&t), sizeof(Teacher));
	t.printf();

	#include<iostream>
#include"fstream"  
using na