In this case, we talk about parallel programming of characters interchange. Exactly if we have two words and we want to change every entire character one each other, or we want to change every odd characters one each other.
For example, we have two words “Comment” and “Request” and we want to change every odd characters. The final result is “Roqment” and “Cemuest”.
If you want to make a parallel code of the case like above, you can download the complete project here.