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iOS

Posted by Marco Aniello
Marco Aniello
3,297 Points

What's wrong with my formula; converting Farenheit to Celcius

Hi Im doing the challenge at the end of the Operators stage. The challenge is: "Using the math operators taught in this stage create a formula to change any given temperature from Fahrenheit to Celsius."

When I do it I get lots of errors. This is how I start my formula

var farenheit: Double = 100 // assuming its 100 degrees out. I made double for percentages

var celcius: Double = (farenheit (-32)*5/9)

I get the error: (IntegerLiteralConvertible) -> $T4 is not identical to 'Double' var celcius: Double = (farenheit (-32)*5/9)

Now I can fix it by writing it all out without shortcuts below:

var farenheit: Double = 100

var celcius = farenheit - 32

var temperature = celcius * 5/9

print("The temperature from \(farenheit) is \(temperature) Celcius")

But thats not exactly what the challenge is. Can anyone tell me whats wrong with this formula: 

var celcius: Double = (farenheit (-32)*5/9)

thanks!

3 Answers

Marco Aniello
Marco Aniello
3,297 Points
Marco Aniello
Marco Aniello
3,297 Points

thanks, but even if I take the "Double" out it still gives an error. Even if I dont specify the type of variable and I rename it 100.0 and 32.0, 5.0,9.0 so they are no longer int it still errors Id love to know the correct way to solve this problem. thanks

Marlon Henry
Marlon Henry
6,885 Points
Marlon Henry
Marlon Henry
6,885 Points

100 is not a double that's a int.

Lukes Ivi
Lukes Ivi
2,001 Points
Lukes Ivi
Lukes Ivi
2,001 Points

I'm having the same problem Marco. One of the problems is that it's not negative 32 (-32) as you specified. I did the same thing. Still not working for me. Here's my code:

var conversionFormula: Double = (32) * 5 / 9

var fahrenheit = 100.00

var answer = fahrenheit - conversionFormula

I'm debating on where does the (F - the conversion) go. The - can't go in front of the conversionFormula var because then it just negates everything than. I need to somehow make it so fahrenheit - conversation formula = the temperature whenever i change it.

No idea. Really bothering me... Any ideas?