Write a function that takes two integers as parameters. The function should add 2 to each of the parameters, then return the value of the two updated parameters added together. In your main, print out the initial values of two integer variables, then print out the results of a call to this function with the two variables. Finally, print out the values of the two integers again. Did they change? Why or why not?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Write a function that takes two integers as parameters. The function should add 2 to
each of the parameters, then return the value of the two updated parameters added
together. In your main, print out the initial values of two integer variables, then print out
the results of a call to this function with the two variables. Finally, print out the values of
the two integers again. Did they change? Why or why not?
Transcribed Image Text:Write a function that takes two integers as parameters. The function should add 2 to each of the parameters, then return the value of the two updated parameters added together. In your main, print out the initial values of two integer variables, then print out the results of a call to this function with the two variables. Finally, print out the values of the two integers again. Did they change? Why or why not?
Expert Solution
Step 1

The addTwo function takes two integer references (int&) as parameters, which means that any changes made to the parameters inside the function will be reflected outside the function as well. The function adds 2 to each of the parameters, updates their values, and returns the sum of the updated parameters.

In the main function, we declare two integer variables x and y with initial values of 5 and 10, respectively. We then print out the initial values of x and y using cout.

We call the addTwo function with x and y as arguments and store the result in a variable called result. We print out the value of the result using cout.

Finally, we print out the updated values of x and y using cout.

Since the parameters were passed by reference and the addTwo function modified them, the values of x and y should have changed.

 

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