Question

如何用c++里的read和write函数向一个txt文件中写数据和读数据

Answer 1

#include<iostream>

#include<fstream>

using namespace std;

struct student

{

char name;

int num;

int age;

char sex;

};

int main()

{student stud[3]={"li",1001,14,'f',"Fun",1002,19,'m',"wang",1003,21,'f'};

ofstream outfile("d:\\stud.txt",ios::binary);

if(!outfile)

{

ceer<<"open error!"<<endl;

abort();

}

for(int i=0;i<3;i++)

outfile.write((char *)&stud[i],sizeof(stud[i]));

outfile.close();

return 0;

}