I an new in this field. I want to ask what is the salary range in after studying C++ or other languages. Is it much or not?

It depends. In the IT field there are very high paying and very low paying jobs, it depends on your qualifications, your location and what you actually apply as.

Try searching on Google for further help.
Search for "programming job salary" or something simular

for an Bachelor Computer Science degree holder looking for an entry level C++ job (assuming you know your shit to at least some degree) you should ask for somewhere between 45 and 60k salary depending on where you live. A city would pay more but living would cost more. Check out http://www.dice.com