Hye,what is mean about the constant that we cannot changed or undefined after they been defined?

Question

It is mean that in variable we can change the value,but in constant we can't change it? I'm a bit confuse between constant and variable,because it is quite similar..when shall we use the constant,and when shall we uss variable?

Answer 1

https://stackoverflow.com/questions/2953601/why-use-constants-in-programming

Answer 2

okayy tq