Given the following function definition
void calc (int a, int& b)
{
$\quad$int c;
$\quad$c = a + 2;
$\quad$a = a * 3;
$\quad$b = c + a;
}
What is the output of the following code fragment that invokes calc?
(All variables are of type int)
x = 1;
y = 2;
z = 3;
Calc(x, y);
Cout

Question

Given the following function definition 
void calc (int a, int& b)
{
$\quad$int c;
$\quad$c = a + 2;
$\quad$a = a * 3;
$\quad$b = c + a;
}
What is the output of the following code fragment that invokes calc?
(All variables are of type int)
x = 1;
y = 2;
z = 3;
Calc(x, y);
Cout << x << " " << y << " " << z << endl;
A) 1 2 3
B) 1 6 3
C) 3 6 3
D) 1 14 9
E) None of these

Quizplus · Accepted Answer

- x is passed as a value to the function calc and does not get modified inside the function, hence x remains 1.
- y is passed as a reference to the function calc and gets modified inside the function. Firstly, c is assigned the value of a+2, which is 3. Then, a is assigned the value of a*3, which is 3*1=3. Finally, b is assigned the value of c+a, which is 6. So, y becomes 6.
- z is not used inside the function and remains 3. 
Therefore, the output would be "1 6 3".

Given the Following Function Definition Void Calc (Int A \quad

Given the Following Function Definition
Void Calc (Int A $\quad$