Opening a terminal from C++

[String24]

I need to open a terminal to run a process. I've got it working, but it feels "dirty". There must be a better way, and I've read a lot about system() being bad.

My working code:

// Open the process
system("gnome-terminal -x nano ~./test.txt");

// close the process
system("pkill nano");

The process will remain open until the user presses a button to invoke the kill command.

What's the best way to achieve this?