Searching a log file [duplicate]

Answer 1

You could use a circular buffer.

1. Open the file
2. Read a line
3. Read address and discart it
4. Read first value and put it into the buffer
5. Read next value, and throw last value of the buffer (std::list could be good for that)
6. Check if buffer contains the pattern
7. Loop through 5 up to the end of the line
8. Loop through 2 up to the end of the file