suggest one loop logic for concatenating two strings without strcat

[fahadmunir32]

I have written a program which concatenate two strings without the help of strcat.
I have used two loops to make this logic.
But want to make the logic with one loop kindly review my code c++ program to concatenate two strings without using strcat and share your logic in comments section of blog so every visitor can read blog and your's code and compare both.
Thanks