CareerCup

The issues is you have a huge file.... you do not want to read in the entire file and process every line.

Open the file, print every character until you hit a newline.

Re-Open the file for random-access read, and set the read pointer at the EOF.
read characters backwards until you hit a newline, then print out the characters you've just read (in reverse order).

If you can't read one character at a time, read a block or page or whatever the file system allows, and work backwards in the block buffer, reading previous blocks as necessary to backup and find the preceeding newline.

int main() {
	ifstream fin("data.txt");
	string s, e;
	int n = -1;
	char x =  ' ';

	getline(fin, s); // Get First Line

	while (x != '\n') // Set Pointer to end of file, loop until beginning of last line
	{
		fin.seekg(n, std::ios::end);
		fin.get(x);
		n--;
	}
	getline(fin, e); // Get Last Line
}

I am just guessing. We can use Head and Tail commands to read the first and last lines from a file.

head -1 filename
tail -1 filename

head -n 1 file
tail -n 1 file

head -n 3 game.txt > game1.txt (This commmand gives first 3 lines of txt file)
tail -n 3 game.txt > game2.txt(This command gives last 3 lines of txt file)

head -n 1 game.txt > game1.txt(first line of file)

tail -n 1 game.txt > game2.txt(last line of file)

Python 2.7.x code:

with open('index.txt', 'r') as f:
l = f.readlines()
l = [i.replace('\n', '') for i in l]

print l[0]
print l[len(l)-1]

Python 3.4:

with open('giant_file.txt', 'r') as freader:
    line = freader.readline()
    print("first: {}".format(line))
    for line in freader:
        pass
    print("last: {}".format(line))