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iOS

Nir Ohayon
Nir Ohayon
2,399 Points
Posted by Nir Ohayon
Nir Ohayon
2,399 Points

Foundation framework challenge

Something is wrong here:

the Q is "Declare another variable named 'planck' of type NSNumber and assign it the value 6.626."

I did it in a bunch of different ways that should work and it still tells me "Bummer! Make sure you created a NSNumber with the correct variable name, and check your syntax!"

my answers variations was:

1 NSNumber *planck = @6.626;

2 NSNumber *planck = [NSNumber numberWithFloat: 6.626];

3 NSNumber *planck = [[NSNumber alloc] initWithFloat: 6.626];

Whats going on??

6 Answers

Amit Bijlani
STAFF
Amit Bijlani
Treehouse Guest Teacher
Amit Bijlani
Amit Bijlani
Treehouse Guest Teacher

I just tried NSNumber *planck = @6.626; and it worked for me.

Tania Dsouza
Tania Dsouza
5,208 Points

why isnt any of these working

Nir Ohayon
Nir Ohayon
2,399 Points
Nir Ohayon
Nir Ohayon
2,399 Points

I found the answer, i had to change it to NSNumber *planck = [NSNumber numberWithDouble:6.626];

which is kind of weird since in the video he used 'numberWithFloat'...:/

Alexander Palm
Alexander Palm
16,695 Points
Alexander Palm
Alexander Palm
16,695 Points

Declare another variable named 'planck' of type NSNumber and assign it the value 6.626.

I tried NSNumber *planck = [NSNumber numberWithFloat:6.626];

Is that not a correct answer?

Amit Bijlani
Amit Bijlani
Treehouse Guest Teacher
Amit Bijlani
Amit Bijlani
Treehouse Guest Teacher

I have amended the code challenge and that answer should work.

Alexander Palm
Alexander Palm
16,695 Points
Alexander Palm
Alexander Palm
16,695 Points

Thanks Amit. Love your courses!

Magnus Braathen
Magnus Braathen
7,726 Points
Magnus Braathen
Magnus Braathen
7,726 Points

I also went for NSNumber *planck = [NSNumber numberWithFloat:6.626]; like in the tutorial, codechallange spat my code right out again.. It works perfectly well in Xcode..

Marie Veverka
Marie Veverka
12,117 Points
Marie Veverka
Marie Veverka
12,117 Points

Mine wouldn't work until I changed it to NSNumber *planck = [NSNumber numberWithDouble:6.626]; as well . . .