The following functions are supposed to return a random int or a random double n

Question

The following functions are supposed to return a random int or a random double number. However the following function overloading is illegal in C++ since the parameters of both functions are the same (they both do not pass any parameters to the function):

int getRand();

double getRand(); //ERROR!!!

One way to fix this error and have two functions to return a random int or double is to have different function names, i.e.:

int getRandInt();

double getRandDouble(); //CORRECT!

What is an alternative way to still do function overloading (having the same name for the both above functions) where one returns a random int and the other returns a random double without any errors? Write the function prototypes and explain briefly in up to 3 sentences.

Explanation / Answer

int getRand() const

double getRand()

The two methods int getRand() const and double getRand() have same signature exvept that one is const and other is not.

C++ allows member methods to be overloaded on the basis of const type. We can make one function const, that returns a const reference or const pointer, other non-const function, that returns non-const reference or pointer.

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