percentage from terminal

[csstudent123]

Hey guys and girls.

say I want to update a file but I want to show the percentage when it is being updated. How can I do this? Do I need to use threads?

[games4thefuture]

Can you provide a little more detail?

[csstudent123]

say I am writing something to a file from my cpp program from struct array, Is it possible to show percentage increment until writing is fully done?