Rene van Oostrum <rene@cs.ust.hk> writes:
> According to 5.3.2, the value returned by prefix ++ and prefix --
> should be an lvalue. What is the reason for this requirement?

void f(int &n);
int main(int c, char **v) { f(++c); }


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Hi,

According to 5.3.2, the value returned by prefix ++ and prefix --
should be an lvalue. What is the reason for this requirement?

I tried to come up with some simple code example that would break if
prefix ++ and -- were to return an rvalue instead, such as

  int i=0;
  ++++++i;

but I don't really see the advantage of being able to do that.

Thanks,
Rene

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