Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

help!

I am totally lost with this challenge. Could you help steer me in the right direction?

"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.)"

2 Answers

Michael Hulet
Michael Hulet
47,912 Points

In order to implement a function, you need to specify its return type, then specify the functions name, then specify parameters it will take by defining their names and types in parentheses, then you write your code between brackets. This follows your directions (I'm assuming you're still on the part where you're learning plain C):

float addTwo(float float1, float float2){
    return float1 + float2;
}

structure of a C function:

```returnType functionName (returnType arg1, returnType arg2) { return arg1+arg2; }

i felt the lesson was pretty thorough in the explanation of how C functions are written.