Constant
If you have a static variable that never changes and you want that nobody overrides your variable, use the const keyword by declaration. It makes the variable unchangable (constsant).
For example:
const double x = 42;
The variable x will always be 42 and nobody can change it. The following code would cause an error:
const int x = 10;
x = 15;
You should declare variables as constants if you are sure that they will probably never change:
const int monthPerYear = 12;
const char firstAlphabetLetter = 'A';
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If you have a static variable that never changes and you want that nobody overrides your variable, use the const keyword by declaration. It makes the variable unchangable (constsant).
For example:
const double x = 42;
The variable x will always be 42 and nobody can change it. The following code would cause an error:
const int x = 10;
x = 15;
You should declare variables as constants if you are sure that they will probably never change:
const int monthPerYear = 12;
const char firstAlphabetLetter = 'A';
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