Sometimes designing is much easier if we following the procedural approach particularly when involves multiple threading, processes etc. When I was designing couple of OS tools, I used C instead of C# or C++ or Java, all objects was making things too complicated. Procedural approach makes things a lot easier.

Well Reetha, you said you passed B.Tech in 2012 and its 2016 now. So its a lot of gap. Before I could suggest you something, I want to know what was your work in the non-IT and why do you want to come to IT ? did you consider other options like Business analyst etc.... However, if you want a course name I would suggest Big Data Analytics. You can get good package and good growth once you are in. But, getting into an IT company with BigData Anaytics would be difficult for you considering your gap. If you have any reference, it would make things a lot easier. There are other traditional courses like DotNet,C#,MVC or java. There are too many jobs in these traditional courses but you need to be an expert here as there are a lot more candidates. Finally its your call. All the best.