"Default construction" of built-in types?

From: DaKoadMunky (dakoadmunky_at_aol.com)
Date: 05/29/04 

Date: 29 May 2004 03:09:46 GMT

I recently came across some code in a template that default constructed an
object of type T to pass to another function...

SomeFunction(T());

The code that instantiates that template specifies T as an int.

Proper program behavior relies on that "default constructed" int being zero.

That lead me to the following example...

int main()
{
  int i; //Uninitialized! Expected for automatic of built-in type

  int j = int(); //Initialized to zero! Not sure what to expect

  return 0;
}

Is such "default construction" of built-in types standard C++?

char() == 0
int()==0

etc...

Thanks

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