The function pointer must have a return type and parameters that match the function it is referencing. And just as with data pointers, we use the asterisk * to declare the pointer.

Cryptographic hash functions are mathematical functions that are often used with cryptocurrency. Find out in this guide how they work and what their role is.

I know many other languages use the eval() function to take a string argument and evaluate it as part of the source code (so you can run a function or assign a variable etc). I've seen it in PHP ...