Q2

MCQ1 mark, −0.25

Consider the following function void swap(int a, int b) { int temp; temp = a; a = b; b = temp; } In order to exchange the values of two variables $x$ and $y$ .

(A)

call $swap(x, y)$

(B)

call $swap(\&x, \&y)$

(C)

$swap (x, y)$ cannot be used as it does not return any value

(D)

$swap (x, y)$ cannot be used as the parameters are passed by value

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