// 第二十一章流 7二进制文件和文本文件
//1 以文本形式输出到文件
/*
#include <iostream>
#include <fstream>
using namespace std;
//定义一个结构体people
const int num=20;
struct people
{
char name[num];
double weight;
int tall;
int age;
char sex;
};
int main()
{
people pe={"李能",78.5,181,25,'f'};
ofstream fout("people.dat",ios::out|ios::app); //打开.dat,用out或app方法
fout<<pe.name<<" "<<pe.age<<" "<<pe.sex<<" "<<pe.tall<<" "<<pe.weight<<" "<<"\n";
fout.close();
ifstream fin("people.dat");
char ch[255];
fin.getline(ch,255-1,0);
cout<<ch;
fin.close();
return 0;
}
*/
//2 以二进制形式输出到文件
//假如我们换成以二进制形式输出,那么我们可以将第16地和第17行换下面的语句
//ofstream fout("people.dat",ios::binary)
//fout.write((char*)&pe, sizeof pe);
/*#include <iostream>
#include <fstream>
using namespace std;
//定义一个结构体people
const int num=20;
struct people
{
char name[num];
double weight;
int tall;
int age;
char sex;
};
int main()
{
people pe={"李能",78.5,181,25,'f'};
ofstream fout("people.txt",ios::binary);
fout.write((char*)&pe,sizeof pe);
fout.close();
people pe1={"张玲",78.5,181,26,'f'};
ifstream fin("people.txt",ios::binary);
fin.read((char*)&pe1,sizeof pe1); //这里是读取
cout<<pe1.name<<" "<<pe1.age<<" "<<pe1.sex<<" "<<pe1.tall<<" "<<pe1.weight<<" "<<"\n";
//fin.close();
return 0;
}
*/