* RE: A simple question of fstream
@ 2003-01-30 10:31 Ajay Bansal
0 siblings, 0 replies; 6+ messages in thread
From: Ajay Bansal @ 2003-01-30 10:31 UTC (permalink / raw)
To: Michal Liptak, gcc-help
I also figured one sol...
If I use
iostrm.open("new1.txt",ios::out | ios::in | ios::trunc);
File is created. I just want to know the logic behind this
-----Original Message-----
From: Michal Liptak [mailto:liptak@isdd.sk]
Sent: Thursday, January 30, 2003 3:57 PM
To: gcc-help@gcc.gnu.org
Subject: Re: A simple question of fstream
try this..
int main(void) {
ofstream of;
of.open("name");
if (of.fail()) return -1;
of<<"text";
of.close();
return 0;
}
m.
On Thu, 30 Jan 2003 14:01:12 +0530
"Ajay Bansal" <Ajay_Bansal@infosys.com> wrote:
>Hi All
>
>I want from the following program to create a new file & write into it.
>But it is not doing so. I am compiling with gcc 3.2.1
>
>#include <fstream>
>#include <iostream>
>#include <stdlib.h>
>#include <errno.h>
>using namespace std;
>
>int main()
>{
>fstream iostrm;
>
>iostrm.open("new1.txt",ios::out | ios::in);
>
>cout<<errno;
>iostrm.write("gagan",5);
>
>iostrm.close();
>
>return 1;
>
>}
>
>What is wrong over here. If I compile the program using gcc 2.95, I get
>a new file.
>
>-Ajay
>
>
>PS: about my prior mails on compatibility issues with 2.95 & 3.2.1... I
>am changing my code to meet with the standards.. :( :(
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: A simple question of fstream
@ 2003-01-30 13:00 Ajay Bansal
0 siblings, 0 replies; 6+ messages in thread
From: Ajay Bansal @ 2003-01-30 13:00 UTC (permalink / raw)
To: John Love-Jensen, gcc-help
Still doesn't work with gcc 3.2.1, RH73
-----Original Message-----
From: John Love-Jensen [mailto:eljay@adobe.com]
Sent: Thursday, January 30, 2003 6:19 PM
To: Ajay Bansal; gcc-help@gcc.gnu.org
Subject: Re: A simple question of fstream
Hi Ajay,
I modified your example (see below), and it works for me (GCC 3.1 on OS
X).
Sincerely,
--Eljay
#include <fstream>
#include <iostream>
#include <cstdlib>
#include <cerrno>
using namespace std;
int main()
{
fstream iostrm;
iostrm.open("new1.txt", ios_base::out | ios_base::in);
cout << errno;
iostrm.write("gagan", 5);
iostrm.close();
return 1;
}
^ permalink raw reply [flat|nested] 6+ messages in thread
* A simple question of fstream
@ 2003-01-30 10:15 Ajay Bansal
2003-01-30 10:23 ` Michal Liptak
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Ajay Bansal @ 2003-01-30 10:15 UTC (permalink / raw)
To: gcc-help
Hi All
I want from the following program to create a new file & write into it.
But it is not doing so. I am compiling with gcc 3.2.1
#include <fstream>
#include <iostream>
#include <stdlib.h>
#include <errno.h>
using namespace std;
int main()
{
fstream iostrm;
iostrm.open("new1.txt",ios::out | ios::in);
cout<<errno;
iostrm.write("gagan",5);
iostrm.close();
return 1;
}
What is wrong over here. If I compile the program using gcc 2.95, I get
a new file.
-Ajay
PS: about my prior mails on compatibility issues with 2.95 & 3.2.1... I
am changing my code to meet with the standards..
:( :(
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: A simple question of fstream
2003-01-30 10:15 Ajay Bansal
@ 2003-01-30 10:23 ` Michal Liptak
2003-01-30 12:53 ` John Love-Jensen
2003-01-30 13:03 ` John Love-Jensen
2 siblings, 0 replies; 6+ messages in thread
From: Michal Liptak @ 2003-01-30 10:23 UTC (permalink / raw)
To: gcc-help
try this..
int main(void) {
ofstream of;
of.open("name");
if (of.fail()) return -1;
of<<"text";
of.close();
return 0;
}
m.
On Thu, 30 Jan 2003 14:01:12 +0530
"Ajay Bansal" <Ajay_Bansal@infosys.com> wrote:
>Hi All
>
>I want from the following program to create a new file & write into it.
>But it is not doing so. I am compiling with gcc 3.2.1
>
>#include <fstream>
>#include <iostream>
>#include <stdlib.h>
>#include <errno.h>
>using namespace std;
>
>int main()
>{
>fstream iostrm;
>
>iostrm.open("new1.txt",ios::out | ios::in);
>
>cout<<errno;
>iostrm.write("gagan",5);
>
>iostrm.close();
>
>return 1;
>
>}
>
>What is wrong over here. If I compile the program using gcc 2.95, I get
>a new file.
>
>-Ajay
>
>
>PS: about my prior mails on compatibility issues with 2.95 & 3.2.1... I
>am changing my code to meet with the standards..
>:( :(
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: A simple question of fstream
2003-01-30 10:15 Ajay Bansal
2003-01-30 10:23 ` Michal Liptak
@ 2003-01-30 12:53 ` John Love-Jensen
2003-01-30 13:03 ` John Love-Jensen
2 siblings, 0 replies; 6+ messages in thread
From: John Love-Jensen @ 2003-01-30 12:53 UTC (permalink / raw)
To: Ajay Bansal, gcc-help
Hi Ajay,
I modified your example (see below), and it works for me (GCC 3.1 on OS X).
Sincerely,
--Eljay
#include <fstream>
#include <iostream>
#include <cstdlib>
#include <cerrno>
using namespace std;
int main()
{
fstream iostrm;
iostrm.open("new1.txt", ios_base::out | ios_base::in);
cout << errno;
iostrm.write("gagan", 5);
iostrm.close();
return 1;
}
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: A simple question of fstream
2003-01-30 10:15 Ajay Bansal
2003-01-30 10:23 ` Michal Liptak
2003-01-30 12:53 ` John Love-Jensen
@ 2003-01-30 13:03 ` John Love-Jensen
2 siblings, 0 replies; 6+ messages in thread
From: John Love-Jensen @ 2003-01-30 13:03 UTC (permalink / raw)
To: Ajay Bansal, gcc-help
Correction:
iostrm.open("new1.txt", ios_base::out | ios_base::in | ios_base::trunc);
--Eljay
^ permalink raw reply [flat|nested] 6+ messages in thread
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2003-01-30 10:23 ` Michal Liptak
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2003-01-30 13:03 ` John Love-Jensen
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