File handling in C++

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please provide me solution.
My requirement is :

i need to open multiple file in a particular location like d:/xyz/ in this location multiple *.txt is there. in each .txt first line start with A. i want to change each A as a.
can any one let me provide the C++ code. code should be comapatable in unix machine.

Posted 27-Jun-14 0:47am

ashu_1july

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[no name] 27-Jun-14 6:51am

Being a member a year is more than enough to know that we are not here to write your code for you.

Peter Leow 27-Jun-14 7:00am

Homework is not question.

KarstenK 27-Jun-14 8:29am

"Please make my homework" questions wont teach you programming...

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Richard MacCutchan · Answer 1 · 2014-06-27T06:09:00

Solution 1

see here[^].

Posted 27-Jun-14 6:09am

Richard MacCutchan

CPallini · Answer 2 · 2014-06-27T07:28:00

Unfortunately there is not a cross-platform (that is working on both Windows and Linux) way for enumerating all the files of a folder, you have to write both Windows and Linux specific code for that.
Once you are able to open them, for every file you have to

Open it
Load its content in memory
Make the required modification in memory
Write back the modified content to the original file (that is overwriting it)

The above steps can be done with cross-platform C++ code.