Language: C++ _In C++ you have to specify the type of variables. Are there any benefits to it? _What is a compiler? _What is a reference variable? _What is a pointer? What can be said about the following features based on the signature? double function(double*) double* function(double, double, int) void function(double*, int) int& function(int, bool)

_Parameters to a function: What is call by value? What is call by reference?

Thank you in advance