Function F_First_Program

Lab_19/main.cpp:16–72

int main();

void F_First_Program()
{

	// creating a text file one.txt
	ofstream out_one;
	out_one.open("one.txt");
	for (int i = 2; i <= 2 * 10; i = i + 2)
	{
		out_one << i << endl; // writing to file first ten even numbers
	}
	out_one.close(); // closing the file

	// creating a text file one.txt
	ofstream out_two;
	out_two.open("two.txt");
	for (int i = 5; i <= 5 * 10; i = i + 5)
	{
		out_two << i << endl; // writing to file first ten multiples of five
	}
	out_two.close(); // closing the file

	// calculting the sum
	ifstream in_one;
	ifstream in_two;
	in_one.open("one.txt"); // opening files
	in_two.open("two.txt");

	int total = 0;
	int num1 = 0;
	int num2 = 0;

	while (in_one && in_two)
	{
		total += num1 + num2; // calculating the total
		in_one >> num1;
		in_two >> num2;
	}
	in_one.close(); // closing the files
	in_two.close();

	///////////////////////////////////////////////////////////////////
	// creating a file total for storingthe total sum of numbers
	ofstream out_total("total.txt");
	out_total << total << endl;
	out_total.close();

	// reading the file and outputing it on the screen
	ifstream in_total;
	in_total.open("total.txt");

	cout << "All three Files are created!\n";

	in_total >> total;
	cout << "TOTAL: " << total << "\n\n"; // displaying the total in console

	in_total.close(); // closing the file after executing
}