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iOS Objective-C Basics (Retired) Functional Programming in C Functions

Posted by daniel liem
daniel liem
194 Points

functions

hi, I was just doing the test on functions and I don't understand what to put in the editor. I don't know what I'm doing wrong and because of hat I'm confused on it

1 Answer

Andrew Lincoln
Andrew Lincoln
8,880 Points
Andrew Lincoln
Andrew Lincoln
8,880 Points

hey daniel, not really familiar with Objective C but most languages are similar. Though it seems like it's asking for you to write a function named addTwo. It should look something liked this.. I will write out some pseudo(fake) code that would be used for strongly typed languages like objective C or java C++. 

public double addTwo(double num1, double num2) {
            return double num1 + num2;    
}

If any of that doesn't make sense... Here is a good analogy a function is much like a CD player. You put a CD which is the parameter or argument into the CD player and the output is music your hear from the CD player. A function implementation of this would look something like..

public String CDPlayer(String cdYouWantToPlay) {
           String startMusic = "starting the music";

           return String cdYouWantToPlay + startMusic;

}

Now I can call that function or 'press play' on the function and it will return or 'give you back' the audio of the disk..

String metallicaCD = " Fade To Black"

CDPlayer(metallicaCD);

Hope this helps!