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

Caleb Kleveter
MOD
Caleb Kleveter
Treehouse Moderator 37,862 Points
Posted by Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points

What are they to tell me in this code challenge?

Can anyone tell me what these instructions mean?: Implement a function named "addTwo" that returns the sum of two floats. The function will accept two float numbers as arguments. It should add the two arguments together, and return the result. (No need to write the main function. Just write out the implementation for the addTwo function.) This was my answer:

float addTwo = 1;

float addTwo = 2;

printf("%f %f\n", addTwo);

return 0;

when I preview it says:

redefinition of 'addTwo' as different kind of symbol float addTwo(float, float); ^ note: previous definition is here float addTwo = 1; ^ 4 errors generated.

What am I doing wrong?

3 Answers

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

you have not implemented the actual function. all the challenge asks you to do is implement the function

here is a shell of what your function should look like:

returnType functionName(dataType parameterOne, dataType parameterTwo) {

return something;

}

the challenge tells you what the function should be named, the data types and how many arguments it should have, and what it should return.

you dont need anything else in your challenge editor but the function implementation so remove everything you had and just add the implementation of the function.

Caleb Kleveter
MOD
Caleb Kleveter
Treehouse Moderator 37,862 Points
Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points

Okay here is what I have now, the preview shows nothing but it's still saying i'm wrong:

float addTwo(float addTwo) { return addTwo + addTwo; }