video yt sui file

main.cpp

#include <iostream>
#include <fstream>
#include <vector>
#include <sstream>

struct Persona {
    std::string nome;
    std::string cognome;
    int matricola;
};

void to_csv(std::string,std::vector<Persona>);
std::vector<Persona> from_csv(std::string filename);
int main() {
    std::vector<Persona> persone = {
        {"Pinco", "Pallo", 1},
        {"Mario", "Strani", 2}
    };

    to_csv("persone.csv",persone);

    auto result = from_csv("persone.csv");
    to_csv("result.csv",result);
    // std::ofstream outfile("out.txt");
    //
    // if (outfile.is_open()) {
    //     outfile << "Hello World2!\n";
    //     outfile.close();
    // }
    //
    // std::ifstream infile("out.txt");
    // std::string line;
    // if (infile.is_open()) {
    //     while (std::getline(infile, line)) {
    //         std::cout << line << "\n";
    //     }
    //     infile.close();
    // }
    return 0;
}

std::vector<Persona> from_csv(std::string filename) {
    std::ifstream file(filename);
    std::vector<Persona> persone;
    std::string line;
    if (file.is_open()) {
        while (std::getline(file, line)) {
            std::stringstream ss(line);
            std::string token;
            Persona persona;
            std::getline(ss, token, ';');
            persona.nome = token;
            std::getline(ss, token, ';');
            persona.cognome = token;
            std::getline(ss, token);
            persona.matricola = std::stoi(token);
            persone.push_back(persona);
        }
        file.close();
    }
    return persone;

}

void to_csv(std::string filename,std::vector<Persona> data) {
    std::ofstream output{filename};
    if (output.is_open()) {
        for (const auto& persona : data) {
            output << persona.nome << ";";
            output << persona.cognome << ";";
            output << persona.matricola << std::endl;
        }
        output.close();
    }
}