Using ofstream to write text to the end of a file

Question

How do I use the ofstream to write text to the end of a file without erasing its content inside?

Answer 1

You can pass the flag ios::app when opening the file:

ofstream ofs("filename", ios::app);

Answer 2

You want to append to the file. Use ios::app as the file mode when creating the ofstream.

Appending will automatically seek to the end of the file.