What are constants in C++?

What are constants in C++?

Constants in C++ are fixed values that cannot be altered during program execution. They can be defined using the const keyword.

Can you give me an example of a constant?

Sure! For example, you can define a constant for the value of pi like this: const double PI = 3.14159;.

What is the difference between const and #define?

const is a type-safe way to define constants, while #define is a preprocessor directive that creates a macro. Using const allows for type checking.

Are there any limitations to using constants?

Yes, constants must be initialized at the time of declaration and cannot be modified later. They also have a scope based on where they are defined.