Ejercicio 6 de ficheros binarios

exercise6.cpp

#include <iostream>
#include <fstream>
#include <cstring>

using namespace std;

struct Student{
    char id[20];
    char surname[40];
    char name[20];
    int group;
};

int main(){
    ifstream text("students.txt");
    ofstream data("students.dat", ios::binary);

    if(!text.is_open() || !data.is_open()) return -1;

    string lec;
    Student student;
    while(getline(text,lec) && !data.fail() && !text.eof()){

        //We read all the data and put it on a struct
        strncpy(student.id, lec.c_str(), 19);
        student.id[19] = '\0';

        getline(text,lec);
        strncpy(student.surname, lec.c_str(), 39);
        student.surname[39] = '\0';

        getline(text,lec);
        strncpy(student.name, lec.c_str(), 19);
        student.name[19] = '\0';

        getline(text,lec);
        student.group = stoi(lec);

        //We write the data
        data.write((const char*)&student, sizeof(student));
    }

    text.close();
    data.close();

    return 0;
}