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POWhat does it mean to return a function result as an "output parameter"?
 

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  1. POWhat does it mean to return a function result as an "output parameter"?
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    <p>Hi I was hoping that I could get a better understanding of a few things regarding C++. We are learning about functions and I missed a class and I'm thinking it was the wrong class to of missed because I am so confused. I have two problems regarding clear and concise direction and understanding of terms. This was my first one:</p> <p>a) Write a C++ function named "product" that calculates the product of two integer values passed to it as. The function will takes two input arguments and return the computed answer as an output parameter of the function. b) Write a single line of code that might be used to call(invoke) this function.</p> <p>This is the second one: a) Write a C++ function named "product" that calculates the product of two integer values passed to it as. The function will takes two input arguments and returns the product answer as the result of the execution of the function. b) Write a single line of code that might be used to call(invoke) this function.</p> <p>So my guess is that the second one is meant to be something like this:</p> <pre><code> int product(int a, int b) { return a*b; } </code></pre> <p>and part b as cout &lt;&lt; "The product of your two numbers is " &lt;&lt; product(a,b);</p> <p>First off am I right and either way what would be meant by return answer as output parameter. And while I am at and you feel like taking pity on me could you tell me should I use void instead of int and finally can someone explain better what exactly it is to return by reference. I get the whole aspect about it needs to have an &amp; at the end of the parameter and "technically" that it allows me to change it rather than just return it but I was hoping for something a little more in depth? Sorry to be so needy but any help would be greatly appreciated. Thanks Lynda</p> <p>P.S. I would have tagged as homework but it was deprecated. Sorry!</p>
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    1. PTQuestion
    1. USRob Kennedy
    1. USLynda Blanton
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    1. COHomework tag is deprecated in part because many homework questions are too localized to be of use to future visitors, as such I've voted to close this one.
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      1. POWhat does it mean to return a function result as an "output parameter"?
      1. USdjechlin
    2. COA type of `void` means "no type". So a function returning `void` doesn't return anything, and a function taking `void` as its only argument doesn't take any arguments. In C++ the last can be shortened as an empty set of parentheses.
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      1. POWhat does it mean to return a function result as an "output parameter"?
      1. USSome programmer dude
    3. COThe lecture you missed should have accompanied a reading assignment from your textbook. Have you done the reading? Can you get the lecture notes from a classmate? Maybe your instructor provides notes or slides on the course Web site.
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      1. POWhat does it mean to return a function result as an "output parameter"?
      1. USRob Kennedy
 

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