Check out example codes for "w3schools c++ files". It will help you in understanding the concepts better.

Code Example 1

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

int main() {
	// Create and open a text file
	ofstream MyFile("filename.txt");

	// Write to the file
	MyFile << "Files can be tricky, but it is fun enough!";

	// Close the file
	MyFile.close();
}

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