Question

Which is valid C expression?

(a) int my_num = 100,000;

(b) int my_num = 100000;

(c) int my num = 1000;

(d) int $my_num = 10000;

I got this question during a job interview.

My doubt is from Variable Names topic in portion Data Types, Operators and Expressions in C of C

Answer 1

Right answer is (b) int my_num = 100000;

To explain I would say: Space, comma and $ cannot be used in a variable name.