cppFileIOTextAdv

#include <iostream>
#include <fstream>

//ofstream - output stream
//ifstream - input stream
//fstream - input/output stream

// std::ios::app
// std::ios::trunc
// std::ios::out
// std::ios::in
// std::ios::binary



struct Temp
{
    int id;
    float temperature;
    char desc[20];
};

int main()
{
    const int tempsSize{ 3 };
    Temp temps[tempsSize]{
        {1, 0,"ice"},
        {2, 100.0, "boil"},
        {3, 26.6, "comfort"}
    };

    std::ofstream outf;

    outf.open("d:\\file.txt", std::ios::trunc | std::ios::out);

    if ( !outf )
    {
        std::cout << "IOERROR: can't create/open file!\n";
        return 1;
    }

    for (int i{ 0 }; i < tempsSize; ++i)
    {
        //outf <<  temps[i].id << ' ' << temps[i].temperature << ' ' << temps[i].desc << '\n';
        outf << temps[i].id << '\n' << temps[i].temperature << '\n' << temps[i].desc << '\n';
    }

    outf.close();

    int idx{ 0 };

    Temp readTemps[tempsSize * 3];

    std::ifstream inf;

    inf.open("d:\\file.txt");

    if (!inf)
    {
        std::cout << "IOERROR: can't open file!\n";
        return 1;
    }

    while (!inf.eof())
    {
        inf >> readTemps[idx].id >> readTemps[idx].temperature >> readTemps[idx].desc;



        if (inf.fail())
        {
            if (inf.eof())
            {
                break;
            }

            inf.clear();
            inf.ignore(100, '\n');
        }

        std::cout << "Temps #" << readTemps[idx].id << ' '
                                << readTemps[idx].temperature << ' '
                                << readTemps[idx].desc << '\n';
        idx++;
    }

    inf.close();

    return 0;
}