Please help me with a code that replaces everything on a specific col

[Zewu]

I also want to say that: std::ios::ate doesn't work at all, it doesn't
output anything.

Well, as I said I want everything on a specific col in a document to be erased and then replaced with other bytes on just that col, like col 252.

How do you do it?

[Stoned_Coder]

read the file into memory. make the alterations you want. write the file back out to media again.

[Zewu]

In this case I want to replace everything on col 252 with some other text, shall I use goto. This can't be very hard for you experienced programmers, please help me.

[Stoned_Coder]

1) get file length.
2) allocate space to read file into of file length bytes.
3) read in file to allocated space ( dynamic array)
4) make alterations as you would to any array
5) write the array out to disc.
6) free the memory used to read the file into.