How to extract the numbers in a file in C++?

I have some similar files like this:
15 12
0 0 168
0 2 92
(more numbers)…

I want to extract the first two (in this case: 15 and 12) into integers, how can I accomplish that?
By the way, the first two numbers sometime will be unit digits sometimes will be hundreds digits.

>Solution :

Regardless of the language, this will typically consist of the following steps:

1. Open the file
2. Read (formatted) the first two integers
3. Close the file

In C++, we can use ifstream

1. To open:

std::ifstream fil;
fil.open("in.txt");

2. To read:

int x, y;
fil >> x >> y;

3. To close:

fil.close();

Make sure to include the fstream header:

#include <fstream>