find a string in a memory mapped txt

[motobizio]

Hi to all

I have a txt file, which contains many strings like the followings:
KEY1 STRING1
KEY2 STRING2
......

I have to search for the KEY* value and I have to copy the corresponding STRING* value.
I mapped it into memory with CreateFile, CreateFileMapping and MapViewOfFile.
Actually I read a single row of the mapped file and search for value KEY* inside of it: if the match results positive, I copy STRING* value. Otherwise I continue in my research.

Is this the best way I have? There is something better? Something like function "fseek" which could work in memory mapped file?

Thank you so much

[VladimirF]

...Is this the best way I have?Not sure what is the “best” here, but I would try strstr().

[motobizio]

Thank you for your answer!
This function results very useful!
I will try to use it!

Thank you again