Programming Languages

Folowing is the oder of precedance in respect of rigor CTC etc for choice of courses asked by you: BTech CS , BTech IT , BCA .

Vidyalankar and Donbosco offer almost same placement. Although cutoff for Vidyalnakr is lower than DonBosco. here is the placement details.
https://www.shiksha.com/Vit-Vidyalankar-Institute-Of-Technology-Chembur-Mumbai-institute-college-listingoverviewtab-35990

Dear Sheik,
The answer to your question ain't really simple. IT is a really broad sector. There are still COBOL, PASCAL, C, ADA programmers because companies need them to work on their legacy systems and on the other side are programmers working on PHP, Knockout JS, Angular JS, Hadoop etc. So The answer is you should be good in any one language at least to survive nicely in IT Sector.

Dear Kumar,
As you stated, you are interested in Hacking and Programming. After you get your result, you can go for a full time B.E or a B.Tech course in IT/ CS which will give you the basic exposure to programming fundamentals and will give you the base that you need to become a good programmer. You can also join an ethical hacking course either from a training center or even online from websites like www.simpilearn.com or www.coursera.com. This can give you the exposure in both the fields of your interest.

If you dont have interest in C,C+ you can opt for other prgramming languages which offers different framework like SQL, JAVA, PHP etc or you can go for database language like oracle or can try for cisco or redhat networking certifications