I want to be certified in C/C++ language but I didn’t find any Certification Institutes. Where do I look for one?
Any open option to Nigerians?
If you are from Bangalore, India, There is a great place that my friend used to attend. It's called Uttara. He fell in love with C after attending this course. So I think it must be worth it.
Check out Red Hat, they have a certification for C programming geared towards Linux Programming.
You can get it from microsoft or niit.
Yes, and NIIT also offers a certification course wherein C is taught with Data Structures, which is immensely useful.
w3 school or niit (in india)
If you are in India, try out C-Dac and NIIT. Definitely two of the better ones.
Would be more helpful if you can tell your city of residence and also do you want a online certification or a physical institute. There are lot of institutes all over India conducting such certifications.
This link should be useful for you to find what you need : http://it.shiksha.com/cplusplus-certification-training-institutes-in-india-categorypage-10-105-55-0-0-1-1-2-0-none-1-0#page-top