C++ and setting pointer to eof to add records

[marcia]

I am wondering if anyone could help me figure out how to set a pointer
to the eof when trying to add records to existing file in C++?

Any help would be appreciated

 

[Alf P. Steinbach]

* marcia:

I am wondering if anyone could help me figure out how to set a pointer
to the eof when trying to add records to existing file in C++?

Any help would be appreciated

You can seek to the end of the file, and with e.g. ofstream you can specify
that in the constructor.

 

[mlimber]

* marcia:

You can seek to the end of the file, and with e.g. ofstream you can specify
that in the constructor.

Specifically, you can do it like this via the constructor:

#include <fstream>
using namespace std;

int main()
{
ofstream file( "myfile.txt", ios_base::ate );
file << "This text will appear at the end of the file." << endl;
return 0;
}

or like this via the seekp method:

#include <fstream>
using namespace std;

int main()
{
ofstream file( "myfile.txt" );
file.seekp( 0, ios_base::end );
file << "This text will appear at the end of the file." << endl;
return 0;
}

You can get more details at

http://www.cplusplus.com/ref/iostream/fstream/

Cheers! --M