Consider this class with a const variable and function: class Student { private: const int IDNum;...

Consider this class with a const variable and function:
class Student {
private:
const int IDNum;
public:
Student();
int getIDNum() const:
};
a. How do you initialize the const variable IDNum to 100? Write the code:
b. Are getters normally declared const?
c. Are setters normally declared const?
d. Can a const function call a non-const function?
e. Can a non-const function call a const function?
f. Can a const function use a non-const variable?
g. Can a non-const function use a const variable?

Expert Solution

a. How do you initialize the const variable IDNum to 100? Write the code:
We have to use initializer list as follows to initialize IDNum to 100 in the constructor

Student::Student():IDNum(100){
}

b. Are getters normally declared const?
Yes, getters are normally declared as const, since we simple return the values of member variables without manipulating them or updating them

c. Are setters normally declared const?
No, we cannot declare setters as const, because in setters we modify/change
the value of member variables and doing so will give a compilation error

d. Can a const function call a non-const function?
No, const function can only call const functions

e. Can a non-const function call a const function?
Yes, non-const function can call const function

f. Can a const function use a non-const variable?
Yes, we can use non-const variables

g. Can a non-const function use a const variable?
Yes, non-const function can use const variable

venereology answered 3 hours ago

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