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

int main()
{
    char buffer[32];
    const char* filename = "ex3-1.cpp";

    ifstream fin(filename);
    if (!fin) {
        cerr << "Unable to open input file " << filename << endl;
        exit(1);
    }

    fin.read(buffer, 9);                  // Read the first 9 bytes of the file
    cout << '/' << buffer << '/' << endl;
    buffer[9] = 0;                        // Null terminate the buffer
    cout << '/' << buffer << '/' << endl << endl;

    cout << "fin.tellg() = " << fin.tellg() << endl;
    cout << "fin.peek() = " << fin.peek() << endl;
    cout << "static_cast<char>(fin.peek()) = " << static_cast<char>(fin.peek()) << endl << endl;

    // Reposition to byte 1
    // fin.seek(1);   ERROR
    fin.seekg(static_cast<streampos> (1));
    cout << "fin.tellg() = " << fin.tellg() << endl << endl;

    // Create a streampos object
    streampos pos = fin.tellg();
    //  pos++;  ERROR
    //  pos = pos + 5; // throws a warning
    pos = 2;
    fin >> buffer;
    cout << "buffer = " << buffer << endl;
    cout << "fin.tellg() = " << fin.tellg() << endl << endl;

    fin.seekg(-2, ios_base::cur);
    fin.read(buffer, 25);
    buffer[25] = 0;
    cout << "buffer = " << buffer << endl << endl;

    fin.seekg(0, ios_base::beg);
    fin.read(buffer, sizeof (buffer) - 1);
    buffer[sizeof (buffer) - 1] = 0;
    cout << "buffer = " << buffer << endl;
}