midterm-2

midterm-2.cpp

#include <iostream>
#include <string>
#include <fstream>

using namespace std;

int main(int argc, char const *argv[])
{
	if (argc == 1){
		cerr << "Usage: ./" << argv[0] << " filename" << endl;
		exit(1);
	}
	ifstream in;
	string currentLine;
	in.open(argv[1]);
	if (!in){
		cerr << "Error opening file." << endl;
		exit(1);
	}
	int counter = 1;

	while (1){
		getline(in, currentLine);
		if (!in){
			in.close();
			return 1;
		}
		cout << counter << ": " << currentLine << endl;
		counter++;
	}
	in.close();
	return 0;
}