From: karpfenteich AT gmx DOT de (Peter Karp)
Newsgroups: comp.os.msdos.djgpp
Subject: variable declaration in for-header fails??
Date: Thu, 13 Jan 2000 10:42:55 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hi  :-)

I have a little question, why DJGPP can't compile a program where I've
defined a counter in the for loop (which is better, as the counter is
"more local" then, right?).

This first way compiles flawlessly with version 2.03:

#include <iostream>
using namespace std;

int main()
{
  int x;
  for(x=1, cout << x , x++ ;x<=100; x++)
    cout << ", " << x;

  cout << endl;

  return(0);
}



------------
but fails, when I define the counter inside the loop declaration:

#include <iostream>
using namespace std;

int main()
{
  for(int x=1, cout << x , x++ ;x<=100; x++)
    cout << ", " << x;

  cout << endl;

  return(0);
}

BTW, Borland C++ 3.1 compiles this version without an error, while
DJGPP gives the following error message:

E:\aa\cpp>gxx test.cpp
test.cpp: In function `int main()':
test.cpp:7: parse error before `<'
test.cpp:8: invalid operands `int' and `const char[3]' to binary
`operator <<'
test.cpp:10: warning: name lookup of `cout' changed
d:/progra~1/djgpp/lang/cxx/iostream.h:250: warning:   matches this
`cout' under
current ANSI rules
test.cpp:7: warning:   matches this `cout' under old rules


Greetings from Cologne
Peter

E-Mail: karpfenteich AT gmx DOT de