Quiz: References and Functions

5 questionsNo time limitPass: 60%+10 XP on first pass

References as another name for a variable, pass by value vs by reference vs by const reference, function overloading, default arguments and inline functions.

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Question 1

What does this print?

#include <iostream>
using namespace std;
void f(int &x) { x = x * 2; }
int main() {
    int a = 7;
    f(a);
    cout << a;
    return 0;
}

7140Error

Question 2
Which is true about references?
They can be nullThey can be re-pointed to another variableThey must be initialised when declaredThey need * to read the value
Question 3
How should a function receive a large vector it only reads?
vector<int> vconst vector<int> &vvector<int> *v alwaysIt's not possible

Question 4

What does this print?

#include <iostream>
using namespace std;
int add(int a, int b = 10, int c = 100) { return a + b + c; }
int main() {
    cout << add(1, 2);
    return 0;
}

310311113

Question 5
Two functions named area(int) and area(int, int) in the same program is an example of:
Function overloadingFunction overridingTemplatesRecursion