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

int main() {
	string data, textOut;


	ifstream dataIn;
	dataIn.open("indata.txt");

	if (dataIn.is_open())
	{
		while (dataIn.good())
		{
			getline(dataIn, data);
			cout << data << endl;
		}
		textOut = data;
		while (dataIn.is_open())
		{
			textOut.replace(textOut.find("first"), 6, "second");
			textOut.replace(textOut.find("all"), 4, "some");
			textOut.replace((textOut.find_last_of("last", 0)), 5, "penultimate");
		}

		dataIn.close();
	}
	else cout << "Unable to open file. Please confirm you have exact file name and location." << endl;


	ofstream fileOutput;
	fileOutput.open("dataout.txt");
	fileOutput << textOut;
	fileOutput.close();

	system("pause");

	return 0;
}