What is the difference between variables and constants in C#?

What is the difference between variables and constants in C#?

In C#, variables are used to store data that can change during program execution, while constants hold values that remain unchanged.

Can you give me an example of each?

Sure! A variable can be declared like this: int age = 25; and a constant like this: const double PI = 3.14;.

Why would I use a constant instead of a variable?

Using constants can improve code readability and maintainability, as they signify that the value should not change.

Are there any performance benefits to using constants?

Yes, constants can lead to better performance since the compiler can optimize them, knowing their values won't change.