How can I practice recursion in C++?

How can I practice recursion in C++?

You can practice recursion in C++ by solving problems like factorial calculation, Fibonacci series, and tree traversals.

Can you give me an example of a recursive function for calculating factorial?

Sure! Here's a simple recursive function to calculate factorial:

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

What are some common mistakes to avoid when using recursion?

Common mistakes include forgetting the base case, causing infinite recursion, and using too much stack space for deep recursion.

How do I know if a problem can be solved recursively?

A problem can often be solved recursively if it can be broken down into smaller subproblems of the same type.