Meaning of int(0) in int *pi = new int(0);?

Question

int *pi = new int(0); 

What's the significance of 0 here? Does it mean integer array of length 0?

Answer 1

It is an initializer (constructor parameter). The newly created int will have value of 0.

Answer 2

It means you want a pointer to an int, and for the value of that int to be 0.

I once lost far too long on a bug that turned out to be someone wrote new char(10) when they meant new char[10]. Compiler was fine with it but it caused major corruption problems, which are so hard to spot. This was 10+ years ago and we didn't have the tools we do now. Will never forget it.