sscanf feature in C++?

[Matt]

Do we have sscanf feature in C++? I guess since C++ is superset of C.
So the following are valid C++ code. Is that true?

char* buf = "10:25:33";
sscanf(buf, "%d:%d:%d", &h, &m, &s);

Please advise. thanks!!

[Dave Vandervies]

In article <ba**************************@posting.google.com >,
Matt <jr********@hotmail.com> wrote:

Do we have sscanf feature in C++? I guess since C++ is superset of C.
So the following are valid C++ code. Is that true?

char* buf = "10:25:33";
sscanf(buf, "%d:%d:%d", &h, &m, &s);

Please advise. thanks!!
Since this is comp.lang.c, the best answer we can give you is "This is
perfectly valid C".

If you go ask this in comp.lang.c++, they'll tell you that it's also
perfectly valid C++ (assuming you have an appropriate using directive in
scope or use the C-style header names instead of the C++-style header
names), and possibly also mention std::strstream as a more C++-ish
alternative.
dave

--
Dave Vandervies dj******@csclub.uwaterloo.caWrong.

May I be excused for showing incomplete/incorrect knowledge of C++ knowledge
in a C newsgroup? --Michael Rubenstein and Ian Woods in comp.lang.c

[Martin Ambuhl]

Matt wrote:

Do we have sscanf feature in C++?
"We", in comp.lang.c, don't, because we program in C. The folks in
comp.lang.c++ would tell you that they have sscanf, but many are likely
to tell you to use some C++ "feature" instead.
I guess since C++ is superset of C.
Your premise is wrong. C++ is not a superset of C. Whoever told you
that should be ignored: he is a fool.
So the following are valid C++ code.
We don't know: comp.lang.c doesn't do C++. But.. Is that true?

char* buf = "10:25:33";
sscanf(buf, "%d:%d:%d", &h, &m, &s);

This legal C program

#include <stdio.h>

int main(void)
{
char *buf = "10:25:33";
int h, m, s;
sscanf(buf, "%d:%d:%d", &h, &m, &s);
printf("%d hours + %d minutes + %d seconds\n", h, m, s);
return 0;
}

produces this output
10 hours + 25 minutes + 33 seconds

and this probably legal (but check comp.lang.c++ where they do C++) C++
program

#include <cstdio>

int main()
{
char *buf = "10:25:33";
int h, m, s;
sscanf(buf, "%d:%d:%d", &h, &m, &s);
printf("%d hours + %d minutes + %d seconds\n", h, m, s);
}

produces this output
10 hours + 25 minutes + 33 seconds

[Default User]

Matt wrote:

Do we have sscanf feature in C++?
This is comp.lang.c. You want comp.lang.c++.
I guess since C++ is superset of C.
This is a false statement.
So the following are valid C++ code. Is that true?

char* buf = "10:25:33";
sscanf(buf, "%d:%d:%d", &h, &m, &s);

<OT>
The C standard library, for the most part, is included in C++.
</OT>
Brian

[Keith Thompson]

Martin Ambuhl <ma*****@earthlink.net> writes:

Matt wrote:

[...]

I guess since C++ is superset of C.

Your premise is wrong. C++ is not a superset of C. Whoever told you
that should be ignored: he is a fool.

Yes, but C++ is very nearly a superset of C (specifically C90). In
particular, it includes the C90 standard library, including the sscanf
function.

You can't expect an arbitrary C program to be a valid C++ program with
the same semantics, but the intersection of the two languages is quite
large, and not much smaller than C itself.

--
Keith Thompson (The_Other_Keith) ks***@mib.org <http://www.ghoti.net/~kst>
San Diego Supercomputer Center <*> <http://users.sdsc.edu/~kst>
We must do something. This is something. Therefore, we must do this.

[P.J. Plauger]

"Default User" <fi********@boeing.com.invalid> wrote in message
news:I5*******@news.boeing.com...

<OT>
The C standard library, for the most part, is included in C++.
</OT>

Which parts are left out?

P.J. Plauger
Dinkumware, Ltd.
http://www.dinkumware.com

[Default User]

P.J. Plauger wrote:

"Default User" <fi********@boeing.com.invalid> wrote in message
news:I5*******@news.boeing.com...

<OT>
The C standard library, for the most part, is included in C++.
</OT>

Which parts are left out?

What I meant was, "for the most part without alteration". I'm not 100%
sure there aren't some slight syntax/semantic differences due to the
differences between the two languages.

I was merely hedging my bets slightly. You'd know, of course.


Brian

[CBFalconer]

"P.J. Plauger" wrote:

"Default User" <fi********@boeing.com.invalid> wrote in message

<OT>
The C standard library, for the most part, is included in C++.
</OT>

Which parts are left out?

A shining example of "insert knife slowly and gently, then twist".
:-)

--
"I support the Red Sox and any team that beats the Yankees"
"Any baby snookums can be a Yankee fan, it takes real moral
fiber to be a Red Sox fan"
"I listened to Toronto come back from 3:0 in '42, I plan to
watch Boston come back from 3:0 in 04"

[Dan Pop]

In <1098190311.jKmdba3Q56d40hxC28JwdQ@teranews> "P.J. Plauger" <pj*@dinkumware.com> writes:

"Default User" <fi********@boeing.com.invalid> wrote in message
news:I5*******@news.boeing.com...

<OT>
The C standard library, for the most part, is included in C++.
</OT>

Which parts are left out?

Most of the bits that are new in C99 are not in the standard C++ library.

4 Except as noted in clauses 18 through 27, the contents of each header
cname shall be the same as that of the corresponding header name.h,
as specified in ISO/IEC 9899:1990 Programming Languages C (Clause
^^^^
7), or ISO/IEC:1990 Programming LanguagesC AMENDMENT 1: C Integrity,
(Clause 7), as appropriate, as if by inclusion. In the C++ Standard
Library, however, the declarations and definitions (except for names
which are defined as macros in C) are within namespace scope (3.3.5)
of the namespace std.

Dan
--
Dan Pop
DESY Zeuthen, RZ group
Email: Da*****@ifh.de
Currently looking for a job in the European Union

[Default User]

CBFalconer wrote:

"P.J. Plauger" wrote:

"Default User" <fi********@boeing.com.invalid> wrote in message

<OT>
The C standard library, for the most part, is included in C++.
</OT>

Which parts are left out?

A shining example of "insert knife slowly and gently, then twist".

I already replied to that. It was a hedge for a possible gap in my
knowledge of C++. Reasonable under the circumstances and locale, I'd
say.

Brian