cppFileIOBase

#include <iostream>
#include <fstream>

/*
* ifstream
* ofstream
* fstream
*/


int main()
{
    std::ofstream outf;

    outf.open("file.txt");

    if (!outf) { std::cout << "IO ERROR!\n"; return 1; }

    //outf << "Hello, from C++ file io programm!\n";
    //outf << "Second string" << '\n';
    //outf << "Some numbers " << 123 << '\n';

    for (int i{ 100000 }; i < 100005; ++i)
    {
        //outf << "Line # " << i << '\n';
        outf << i << '\n';
    }

    //outf << "Some bool value " << (true ? "true" : "false") << '\n';
    //outf << "Some double literal " << 36.6 << '\n';
    outf.close();

    char str[200];
    int readVal{};
    std::ifstream inf;

    inf.open("file.txt");
    if (!inf) { std::cout << "IO ERROR!\n"; return 1; }

    //while (!inf.eof())
    //{
    //  inf.getline(str, 200);
    //  std::cout << str << '\n';
    //}

    while (!inf.eof())
    {
        inf >> readVal;
        if (inf.fail()) { break; }
        std::cout << "Read from file: " << readVal << '\n';
        //inf.ignore(100, '\n');
    }

    inf.close();
}