An algorithm written in C to print out the input number in large size

Update (29 Aug 2017): has published this article on their website, here is the link.

I came across this problem yesterday from the book "Let us C" by Yashavant Kanetkar. On the first glance, I thought the problem to be tough enough for me to solve. After an hour or so, I went back and started thinking about it. I visualized the problem and hoped for the solution if I would use two-dimensional character array. Not letting a minute to pass, I took the pen and paper, and started shaping the algorithm.

On searching online for a good solution, I found none. Hence, I blogged this.

I recommend to try it of your own before moving to the solution.

Solution in C:-