What is the performance impact of using const in C++?

What is the performance impact of using const in C++?

Using const in C++ can improve performance by enabling compiler optimizations and ensuring that variables are not modified.

Can you explain how it helps with compiler optimizations?

When a variable is declared as const, the compiler knows it won't change, allowing it to optimize memory usage and access.

Are there any scenarios where using const might negatively impact performance?

In some cases, excessive use of const can lead to increased complexity in code, which might affect readability and maintainability.

What about using const with pointers?

Using const with pointers can prevent accidental modifications to the data being pointed to, enhancing safety without significant performance costs.