From: "Jonathan Pryor" <jonpryor@vt.edu>
To: "Wei Xu" <weixuz@yesic.com>, <cygwin@sourceware.cygnus.com>
Subject: Re: gcc library
Date: Sat, 31 Jul 1999 18:34:00 -0000 [thread overview]
Message-ID: <043701bec886$c08e32b0$e63d2509@raleigh.ibm.com> (raw)
Message-ID: <19990731183400.74WRzrxoyWPcp97Nb0Mquf1fxUZQmy9hZLCOCgdSUuU@z> (raw)
In-Reply-To: <003901bec883$34bc9e00$c3dba1d1@Xu.toronto.vr1.com>
<iostream.h> doesn't provide the prototype for printf.
You need to include <stdio.h>.
Also, the use of <iostream.h> has been deprecated by
the C++ standard. You should use <iostream>, which
places everything in the std namespace. Additionally,
<stdio.h> has been deprecated in favor of <cstdio>,
which also places the contents into the std namespace;
however, not all compilers support <cstdio>, so I tend
to stick with <stdio.h>...
// example....
#include <iostream>
#include <stdio.h>
using namespace std;
int main ()
{
cout << "Hello, world!\n";
printf ("Hello again, world!\n");
return 0;
}
- Jon
----- Original Message -----
From: Wei Xu <weixuz@yesic.com>
To: <cygwin@sourceware.cygnus.com>
Sent: Wednesday, July 07, 1999 10:15 AM
Subject: gcc library
> Dear all,
>
> I an new to this software. I have download the full verions of Cygwin.
When
> I try to testing the =
> gcc with the following C++ code:
>
> #include <iostream.h>
>
> int main (int argc, char **argv)
> {
> cout << "Hello world\n";
> printf("Hello world\n");
> }
>
>
> It says:
>
> try.cc: In function `int main(int, char **)':
> try.cc:6: warning: implicit declaration of function `int printf(...)'
> C:\WINDOWS\TEMP\ccz14xFI.o(.text+0x1e):try.cc: undefined reference to =
> `cout'
> C:\WINDOWS\TEMP\ccz14xFI.o(.text+0x23):try.cc: undefined reference to =
> `ostream::
> operator<<(char const *)'
> collect2: ld returned 1 exit status
>
> I can figure out what is wrong with my installation or library?=20
> Here is my set:
>
<snipped...>
--
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next prev parent reply other threads:[~1999-07-31 18:34 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-07-07 7:16 Wei Xu
1999-07-07 7:41 ` Jonathan Pryor [this message]
1999-07-31 18:34 ` Jonathan Pryor
1999-07-07 7:47 ` Raju K. V.
1999-07-31 18:34 ` Raju K. V.
1999-07-31 18:34 ` Wei Xu
1999-07-07 7:54 Thomas Pfaff
1999-07-31 18:34 ` Thomas Pfaff
1999-07-07 7:55 Wei Xu
1999-07-31 18:34 ` Wei Xu
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