Function overloading and const keyword

const member function does not allow to modify nonstatic data member value of an object. Below is the prototype for const function: <return-value> function() const;const function with empty definition look like: <return-value> <className>::function() const {}From the above you can see that with the const keyword, we can make function a const function. const function makes this pointer as pointer to a const because of this reason, we cannot modify object data i.e. nonstatic data member of an object. const function can be called from const object as well as non-const…