Does the Vellore Institute of Technology use and teach outdated stuff to CSE students?

Why do you think that c/c++ is old and outdated.
Its one of the most used programming languages of all times.
almost all performance intensive software is written in c/c++ like database software, operating system, even JVM is written in c/c++.
These languages are very good for sysystem programming As they
give you full control over memory management and the compiled code runs directly on the CPU rather than on some VM.
If you want to write application software then languages like JAVA, C#, VB are good.