Consider the following program code:

[tex]\[
\begin{array}{l}
x = 9 \\
y = 3 \\
\text{temp} = x \\
x = y \\
y = \text{temp}
\end{array}
\][/tex]

What are the values of [tex]\( x \)[/tex] and [tex]\( y \)[/tex] as a result of this program code?

A. [tex]\( x \)[/tex] has a value of [tex]\( y \)[/tex]; [tex]\( y \)[/tex] has a value of temp

B. [tex]\( x \)[/tex] has a value of 9; [tex]\( y \)[/tex] has a value of 3

C. [tex]\( x \)[/tex] has a value of 3; [tex]\( y \)[/tex] has a value of 9

D. [tex]\( x \)[/tex] and [tex]\( y \)[/tex] have a value of 9



Answer :

Let’s go through the given program code step by step to determine the final values of [tex]\( x \)[/tex] and [tex]\( y \)[/tex]:

1. Initially, the variables `x` and `y` are assigned values as follows:
[tex]\[ x = 9 \][/tex]
[tex]\[ y = 3 \][/tex]

2. Next, the value of `x` is stored in a temporary variable `temp`:
[tex]\[ \text{temp} = x = 9 \][/tex]

3. The value of `y` is then assigned to `x`:
[tex]\[ x = y = 3 \][/tex]

4. Finally, the value stored in `temp` is assigned to `y`:
[tex]\[ y = \text{temp} = 9 \][/tex]

Now, the values of `x` and `y` have been swapped. The value of `x` is now 3, and the value of `y` is 9.

Therefore, the values of [tex]\( x \)[/tex] and [tex]\( y \)[/tex] as a result of this program code are:
[tex]\[ \boxed{\text{C. } x \text{ has a value of } 3, y \text{ has a value of } 9} \][/tex]