Swift error: prefix/postfix '=' is reserved [duplicate]

Question

I am getting error message:

prefix/postfix '=' is reserved

for below simple in swift.

var c=0,a=2,b=4
c= a+b

any idea why I am getting this error?

Answer 1

Check this: Is this response from the compiler valid?

Swift isn't entirely whitespace-agnostic like C... in particular, it uses whitespace to distinguish prefix from postfix operators (because ++i++ in C is a grammar oddity). But it's not ridiculously strict about whitespace like Python either.

P.S. So you have to add whitespace before =.

Answer 2

If I use a single space after variable "c" name, this error is get removed.

c = a+b