Why we cannot change the constant ?

Answer 1

it make your code readable , saves your time while making changes, error risks became lesser
also it is important for human reader.as we are not complier for better understanding constant are good to use^_^

Answer 2

The whole point of a constant is that it never changes, thats also where it got its name.

Answer 3

Well that's its benefit.Whenever you want some variable to be "constant"(stay same throughout,cannot be changed),declare it constant.

Example,the value of pi(π) is 3.14 approx,which is a constant.

Answer 4

some values are not mean for change like mathematic constants, 1 minute is 60 secs, etc.. and the program need these constants to further calculate and control other variables.

Answer 5

thank u

Answer 6

jfl: because of the two contradicting words _"CONSTANT VARIABLE"_ (::)