Re: [Dev-C++] Problem with 'std::cout' (?)

[matheus r. <mfr...@gm...>]

The statement evaluation happens from right to the left, like all
others. But the ostream operator << acts like a stack. You evaluate
expression from right, push. Then at the end, everything added is
popped.

So basically, you push 512, 256, 128. Then you pop 128, 256, 512.

2007/10/4, Franco Brancaccio <fbr...@gm...>:
> Dear Friends,
>
> I observed an irregular (I think) comportment of 'std::cout'
> reproduced by the simple test code below:
>
>
> #include <iostream>
>  using namespace std;
>
>
>  int myFunc();     // simple test function prototype
>
>
>  // test program
> int main()
>  {
>    cout  << myFunc() << endl           // this block results
>           << myFunc() << endl           // in an inverted
>           << myFunc() << endl << endl;  // console output
>
>     cout  << myFunc() << endl;          // this block results
>    cout  << myFunc() << endl;          // in a correct
>    cout  << myFunc() << endl << endl;  // console output
>
>    system("PAUSE");
>     return 0;
> }
>
>
> // simple test function implementation
>  int myFunc()
> {
>     static int i = 1024;
>    i /= 2;
>     return i;
> }
>
>
> The console output for this code is:
>
>
> 128
> 256
>  512
>
> 64
>  32
> 16
>
>  Press any key to continue...
>
>
>  The questions:
> The two 'cout' blocks act in a different manner! (?)
> Why the first chained block results in an inverted output?
>  Does not the insert operator '<<' act from left to right?
>
>  Obs.: I'm using
>       Dev-C++ 4.9.9.2 ,
>       Win XP 5.1,
>        g++ (1/29/2005).
>
>
>  TIA,
> Franco Brancaccio
>  fbr...@gm...
>
>
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