appfile.cpp

C++ sample code, for the book: C++ black book, including templates, exceptional handling.

#include <iostream>
#include <fstream>
using namespace std;

int main()
{
    ofstream fout;

    fout.open("hello.dat", ios_base::app);

    if (!fout.is_open()) {
        cerr << "Error: Could not open file for appending." << endl;
        exit(1);
    }

    fout << "Hello again from C++." << endl;

    fout.close();

    return 0;
}