whats wrong with this code?

Hi!

I am wondering what is wrong with the code below:

When my program comes to the execution of this line code , I get the error message as statred below.

(vannaktivitet_kalsiumklorid_losning==vannaktivitet_magnesiumklorid_losning)&&(vannaktivitet_kalsiumklorid_losning==vannaktivitet_ammoniumklorid_losning)

this is the error message I get:

Operands to the || and && operators must be convertible to

logical scalar values.

How am I else suppose to write the code if this is the incorrect way of writing the code?

Answer 1

[Muazma Ali]

will the code above not execute if vannaktivitet_kalsiumcloride or the other variables are decimal numbers..?