p.86-6:
what is the longest local name you can use in a C++ program on your system?
what is teh longest external name you can use in a C++ program on your system?
Are there any restrictions on the characters you can use in a name?
I donot know how to find the answers for these three questions, since the question mentioned "on your system". Here, what does the system mean, OS or compiler? And if it were OS or compiler, how to find the answer for the question?