From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jonathan Pryor" <jonpryor@vt.edu>
To: "Wei  Xu" <weixuz@yesic.com>, <cygwin@sourceware.cygnus.com>
Subject: Re: gcc library
Date: Wed, 07 Jul 1999 07:41:00 -0000
Message-id: <043701bec886$c08e32b0$e63d2509@raleigh.ibm.com>
References: <003901bec883$34bc9e00$c3dba1d1@Xu.toronto.vr1.com>
X-SW-Source: 1999-07/msg00126.html

<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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From mboxrd@z Thu Jan  1 00:00:00 1970
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
Message-ID: <043701bec886$c08e32b0$e63d2509@raleigh.ibm.com>
References: <003901bec883$34bc9e00$c3dba1d1@Xu.toronto.vr1.com>
X-SW-Source: 1999-07n/msg00126.html
Message-ID: <19990731183400.74WRzrxoyWPcp97Nb0Mquf1fxUZQmy9hZLCOCgdSUuU@z>

<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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