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What do you mean by &quot;use the 2 void function&quot;? &nbsp;That doesn't make sense?<br />
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&gt;&gt;&nbsp;1st function i have to read and copy the <br />
&gt;&gt;&nbsp;contents of file01.dat and file02.dat into a<br />
&gt;&gt;&nbsp;3rd file<br />
Just use 3 fstream objects to open the 3 files. &nbsp;Read all the information out of the fstream objects for file01 and file02 and write that information to file03.
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What do you mean by "use the 2 void function"?  That doesn't make sense?

>> 1st function i have to read and copy the
>> contents of file01.dat and file02.dat into a
>> 3rd file
Just use 3 fstream objects to open the 3 files.  Read all the information out of the fstream objects for file01 and file02 and write that information to file03.

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how do i use the 2 void function//<br />
for instance for the 1st function i have to read and copy the contents of file01.dat and file02.dat into a 3rd file..<br />
so can someone please help how to do the producers for the file I/O.. and also<br />
i also wanted to know how in them &nbsp;2nd function to read the merged file from data 3rd file.. so can someone please<br />
show &nbsp;me an example like this..
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how do i use the 2 void function//
for instance for the 1st function i have to read and copy the contents of file01.dat and file02.dat into a 3rd file..
so can someone please help how to do the producers for the file I/O.. and also
i also wanted to know how in them  2nd function to read the merged file from data 3rd file.. so can someone please
show  me an example like this..

existing files

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.