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Joey LoForti
Courses Plus Student 1,864 PointsTrouble with floats and functions in C
Anybody figure this out?
Write a function named "addTwo" that accepts two float numbers as arguments. The function should also return a float which is the sum of the two arguments passed to the function.
This is the best I've got but it's wrong
#include <stdio.h>
float addTwo();
int main()
{
float a = 2.561;
float b = 3.523;
float addTwo = 'a' + 'b';
return addTwo;
}
What am I doing wrong?
7 Answers
Amit Bijlani
Treehouse Guest TeacherThe code challenge is not asking you to call the function or print out the results. Your answer is simply:
float addTwo(float a, float b) {
return a + b;
}
Joey LoForti
Courses Plus Student 1,864 PointsThat did not copy and paste right.
Joey LoForti
Courses Plus Student 1,864 PointsXcode likes my code but the quiz challenge doesn't like it. See the code below. What am I doing wrong?
#include <stdio.h>
float addTwo(float a, float b);
int main()
{
float a = 2.561;
float b = 3.523;
float addTwo = a + b;
printf("%f\n", addTwo);
return 0;
}
float addTwo(float a, float b) {
return a + b;
}
Véronique Bellamy
20,810 PointsFYI: You should add your replies as "replies" to your posts (see the "Comment" link right below the text you post, next to the time it was posted) as it adds the details and doesn't skew the "answer" count so people don't look at the question and think "Seven answers? The people here got this, I don't need to help!".
eyeloveotters
15,097 PointsI followed these exact guidelines as shown in the video. How is this not the answer?
Amit Bijlani
Treehouse Guest TeacherYou don't need the main function because the challenge is not asking you to call the addTwo function or print the values.
Joey LoForti
Courses Plus Student 1,864 PointsSorry my code isn't pasting correctly.
Bogdan Raduta
1,076 PointsIn the main() you have to set the parameters for your addTwo function.
Joey LoForti
Courses Plus Student 1,864 PointsI thought I did
float addTwo(float a, float b);
int main( )
Isn't this right? Did I do it right?
Matthew Ferris
2,981 Pointson line 3 after main(), your declaring a float variable with the same name as the function addTwo, and assigning that variable the sum of a and b. instead just call the function you've already created and just pass the variables to the function. I think you can do this like addTwo(a,b). Since it's returning the value, not storing it in a variable, you'll want to throw this into the printf() function.
Joey LoForti
Courses Plus Student 1,864 PointsJoey LoForti
Courses Plus Student 1,864 PointsSweet!!! Thanks for the help. Now I can stop having OCD about it. I sincerely appreciate your help.
Turd Furgeson
2,579 PointsTurd Furgeson
2,579 PointsIs the indentation required? I know it's practice of good code, but I don't recall it ever being mentioned in any of the tutorials (since Xcode seems to do it for you). I had the following:
Turd Furgeson
2,579 PointsTurd Furgeson
2,579 Pointssorry about the html job. Maybe I should try that course. ;-)
Amit Bijlani
Treehouse Guest TeacherAmit Bijlani
Treehouse Guest TeacherAs long as you don't add the html to your answer it should work.