How can I use recursion in C++ effectively?

How can I use recursion in C++ effectively?

Recursion in C++ can be effective for problems like tree traversals, factorial calculations, and Fibonacci sequences. What specific problem are you trying to solve?

I'm trying to calculate the factorial of a number using recursion.

You can define a recursive function like this:

int factorial(int n) {
    if (n <= 1) return 1;
    return n * factorial(n - 1);
}

This function calls itself until it reaches the base case.

What are the advantages and disadvantages of using recursion?

Advantages include simpler code and easier problem-solving for complex problems. Disadvantages are higher memory usage and potential stack overflow for deep recursion.

Can you give me an example of a problem where recursion is particularly useful?

Sure! Recursion is particularly useful in solving problems like the Tower of Hanoi, where you need to move disks between pegs following specific rules.