Member Avatar for n4j

hello everyone
i have a large text file (about 5 GB) and with a program i should edit it with given information by user. when i use ordinary c++ functions related to files, it gives me error for that large file, however it works properly for a small text file.

how can i solve this problem? is there some special functions for large txt files?

Thanks & Regards

Edited by n4j
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Member Avatar for Ancient Dragon

What exactly is the problem you have? Are you trying to read the whole file into memory at one time? Or just read small parts of it?

Member Avatar for n4j

i should write 3 functions : search, insert, delete.
in search function user give me a number that is start of one line and i have to print that line for user.
in insert i have to write given data by user at the end of the file .
and in delet i have delet the line given it's number by user by put a special character at the end of it.

Member Avatar for n4j

any reply??? :(

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