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

Posted by Ana Puente
Ana Puente
Courses Plus Student 149 Points

I'm having a hard time understanding the 'Functions' logic. I need help. Site won't let me go back to re-watch video.

I'm not sure if I'm defining my values correctly and how to implement the function.

functions.c 
int sum (float x, float y);
int main()
{
x = 25;
y = 25;
printf ("sum = %d", sum (x,y));
return 0;
}
int sum (float x, float y)
{
return x + y;
}
Gloria Dwomoh
Gloria Dwomoh
13,116 Points

Are you trying to solve the challenge? If yes the errors you get are mostly because you are not following what it is asking you. It starts by saying "Implement a function named "addTwo" that returns the sum of two floats." your function is not named addTwo and there are other things that need to be fixed. Try reading the challenge again and if you get stuck repost your new code. You can rewatch the lesson..try accessing it from here http://teamtreehouse.com/library/objectivec-basics

1 Answer

J.D. Sandifer
J.D. Sandifer
18,813 Points
J.D. Sandifer
J.D. Sandifer
18,813 Points

Gloria's right: Most of the challenges actually ask for very little code. They're just to make sure you understand the one or two new concepts being presented in the preceding video. Here's an answer:

float addTwo(float x, float y) {     // the return type and function name need to be "float" and "addTwo"
  return x + y;                      // otherwise this is just like your last four lines of code
}