How to Print to a File in C++

/*

Name: PrintToFile

Author: your name goes here

Date: 23/01/06 23:18

Description: This is my first program and is to be handed in

The results will be sent to the printer

*/

#include <cstdlib>

#include <iostream>

#include <fstream> //include library for file processing

using namespace std;

int main()

{

string first, last;

ofstream outfile; //create an output file

outfile.open("output.txt"); //opens the file for output

//Note: may be combined into a single

// statement -

// ofstream outfile("output.txt");

cout << "Please enter your first and last name." << endl;

cout << "Do not forget to press the ENTER key!" << endl << endl ;

cin >> first >> last;

//Use outfile in place of cout

outfile << "This is my first program!" << endl;

outfile << "My name is: " << first << " " << last << endl;

outfile.close(); // close the file

system("PAUSE");

return EXIT_SUCCESS;

}

How to read from a file in C++

/*

Name: ReadFromFile

Copyright:

Author: Prof. Langsam

Date: 05/02/06 18:03

Description: Simple program to read numbers from a file and

display them on the screen

*/

#include <cstdlib>

#include <iostream>

#include <fstream> //include library for file processing

using namespace std;

int main()

{

float x;

ifstream infile; //create the file infile for input

infile.open("MyData.txt"); //Method: open the file

//Note: may be combined into one statement -

// ifstream infile("MyData.txt");

if ( !infile.is_open() ) { //Method: checks to see if file was opened

// The file could not be opened

cout << endl << "ERROR: Unable to open file" << endl;

system ("PAUSE");

exit(1);

}

infile >> x; //read from the file: use infile instead of cin

while (x >= 0) {

cout << x << endl;

infile >> x;

} // end while

infile.close(); //close the file

system("PAUSE");

return EXIT_SUCCESS;

}

Sample data file MyData.txt

4

3

56

32

67

0

1

2

-1