change the Nth value in a .txt file

[Og The Trog]

Hello I have a .txt file which contains a large amount of ones and zeros (tile map for a game)
and basically I just want to know how to change say just the 12th value in the file from a 1 to 0

ThankYou

[LB]

Seek to it, and overwrite it. You're lucky they're the same length and you can just overwrite that one bit of info, rather than have to rewrite the whole rest of the file.

http://www.cplusplus.com/reference/ostream/ostream/seekp/

[Og The Trog]

ThankYou this works ;)