Very Computer

Greets.

  Any C++ programmers handy?

  I installed redhat 5 and went to start playing with the
gnu c++ compiler, gcc/g++. I use a different compiler at
work, but that should hardly make a difference in this
case:

  I compile hello world successfully, but running it
produces no output!!!

  What on earth could be wrong?

#include <iostream.h>
int main()
        {
        cout << "Yo. World.";
        return (0);
        }

-bluejack

I'm clueless.  Try adding an << endl; or else
put a newline int eh print statement?

Still, it should've worked the first time...

I wonder if bluejack named the compiled program "test" or some other
existing program in his path.  Perhaps running it by preceeding it
with ./ will produce the expected results.

William

Also, ask your shell ("type programname" in Bourne-shell derivatives;
"which programname" in c-shells) which program it wants to run.  A common
mistake is to call test programs "test"; since "test" is (almost always) a
shell builtin, you must ask the shell for "./test".

--
|||    "It was not granted you to complete the task, and           |||
|||     yet you may not give it up."      --Rabbi Tarfon           |||

  Blunt> Greets.
  Blunt>   Any C++ programmers handy?

  Blunt>   I installed redhat 5 and went to start playing with the
  Blunt> gnu c++ compiler, gcc/g++. I use a different compiler at
  Blunt> work, but that should hardly make a difference in this
  Blunt> case:

  Blunt>   I compile hello world successfully, but running it
  Blunt> produces no output!!!

  Blunt>   What on earth could be wrong?

  Blunt> #include <iostream.h>
  Blunt> int main()
  Blunt>     {
  Blunt>     cout << "Yo. World.";
  Blunt>     return (0);
  Blunt>     }

Run programs in the current directory with "./foo" rather than juat
"foo".  Just typing "test" runs the shell builtin called test, which
produces no output.

Quote:>  I compile hello world successfully, but running it
>produces no output!!!

>  What on earth could be wrong?

I don't see anything in the errata at www.redhat.com that looks like it would
be relevant, but it can't hurt to apply all the fixes and try again.

It looks like most of the other respondents didn't bother to actually try
your program.  So much for that Info World award to the Linux community for
technical support via the net...

--Tim Smith

#include <iostream.h>
#include <stdio.h>        //maybe you need this!
int main()
{
printf("hello\n");  //test standard function
cout << "hello again\n";
return (0);

Quote:}

Quote:>I just tried it on my redhat system.  NOT logged in as root.  
>I named the file hello.c  I compiled with g++ (NOT GCC).  And I got the
>expected output.

        gcc hello.cc -lg++

On Red Hat 5, it does not work when comiled like that, but does work
when compiled like this:

        g++ hello.cc

--Tim Smith

  >> I just tried it on my redhat system.  NOT logged in as root.  
  >> I named the file hello.c  I compiled with g++ (NOT GCC).  And I got the
  >> expected output.

  Tim> Ah!  Enlightenment arrives!  On Red Hat 4.x, it worked when compiled
  Tim> like this:

  Tim>       gcc hello.cc -lg++

  Tim> On Red Hat 5, it does not work when comiled like that, but does work
  Tim> when compiled like this:

  Tim>       g++ hello.cc

IIRC GNU has moved some stuff from libg++ into libstdc++, now that a
lbstdc++ is a sensible proposition.