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

help!

I have watched all the videos so far and worked through the examples with my xcode.... However I am totally lost on this challenge. I don't know how to create arguing floats. Please help!

1 Answer

structure of this C function:

return_type addTwo (return_type arg1, return_type arg2) { return arg1+arg2; }