Reading and writing characters in C++.

//---------------------------------------------------------------
// File: Code604_FileIO.cpp
// Purpose: Demonstration of character I/O in ANSI Standard C++
// Programming Language: C++
// Author: Dr. Rick Coleman
//---------------------------------------------------------------
#include <fstream>

using namespace std;

int main(void)
{
    ofstream outfile;   // Output file stream
    ifstream infile;    // Input file stream
    char ch;

    outfile.open("textfile.txt", ofstream::out);
    //-----------------------------------------------
    //  Writing characters to a file
    //  I/O function:  outfile.put(char ch)
    //-----------------------------------------------
    for(ch='a'; ch<='z'; ch++)
    {
        outfile.put(ch);
    }
    outfile.close();

    //-----------------------------------------------
    //  Reading characters from a file
    //  I/O function:  char infile.get()
    //-----------------------------------------------
    infile.open("textfile.txt", ifstream::in);
    cout << "Characters read from file.\n";
    while (infile.good())
    {
        ch = infile.get();
        cout << ch;
    }
    cout << "\n";
    infile.close();
    return 0;
}