text replace problem when target contains '&' symbol

Question

I tried to replace if(cond1) with if(cond1&&cond2) in vim, so I typed the command

:%s/\Vif(cond1)/if(cond1&&cond2)/g

but the result is
if(cond1if(cond1)if(cond1)cond2) and not
if(cond1&&cond2)

What command should I actually use?

Answer 1

& in a replacement is a bit special:

magic  nomagic  action
  &      \&     replaced with the whole matched pattern      *s/\&*

But you can escape it with \:

%substitute/\Vif(cond1)/if(cond1\&\&cond2)/g