Should you space out expressions?

Question

I'm used to writing stuff with mathematical operators like this:
sum=foo+bar;
Is it better to keep this habit or to make a small effort and get used to writing like this:
sum = foo + bar;
?

Answer 1

It doesn't matter, it doesn't even improve readability that much, just use the version you're most comfortable with.

Answer 2

some IDE's have an option to format the code which spaces out expressions, so if you're using one of those, there isn't much need to worry

Answer 3

As long as you're consistent throughout the code, it should be okay either way.

Answer 4

In my own opinion, readability is quite important, and whitespaces are "free" anyway, so I prefer using spaces, even if it is a simple mathematical expression. In terms of readability, it is definitly better than the first.