DaniWeb Forum Index > Software Development > C++

C++ RSS

Some thingthat we can do in C and Not in C++

Please support our C++ advertiser: Intel Parallel Studio Home

•

Join Date: Dec 2005

Posts: 2

Reputation: Naveena is an unknown quantity at this point

Solved Threads: 0

Naveena

Offline

Newbie Poster

Some thingthat we can do in C and Not in C++

Dec 10th, 2005

If any body knows it, Pls. post me reply to this

•

Join Date: Aug 2005

Posts: 15,346

Reputation: Ancient Dragon has a reputation beyond repute

Solved Threads: 1460

Ancient Dragon Ancient Dragon is offline

Offline

Still Learning

Re: Some thingthat we can do in C and Not in C++

Dec 10th, 2005

C++ can to everything that C can do plus a lot more. There is nothing in C that can't be done by c++.

•

Join Date: Nov 2005

Posts: 78

Reputation: perniciosus is an unknown quantity at this point

Solved Threads: 4

perniciosus perniciosus is offline

Offline

Junior Poster in Training

Re: Some thingthat we can do in C and Not in C++

Dec 10th, 2005

Aha... implicit function declarations ! Rather weak thought, but it feels the same as saying something that can not be done in c but in c++, both are complete turing machines and can as such do everything a turing machine can (I heard somewhere that the template language in c++ are also turing complete, interesting side note).

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
int main(...)
{
  function( 10 ); 
}
 
...
 
int function( 10 )
{
}
int main(...)
{
  function( 10 ); 
}

...

int function( 10 )
{
}

/pern.*/i

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former. Albert Einstein

•

Join Date: Sep 2004

Posts: 7,599

Reputation: Narue has a reputation beyond repute

Solved Threads: 712

Narue

Offline

Code Goddess

Re: Some thingthat we can do in C and Not in C++

Dec 10th, 2005

>Some thingthat we can do in C and Not in C++
Compile on certain embedded systems.

I'm here to prove you wrong.

•

Join Date: Aug 2005

Posts: 15,346

Reputation: Ancient Dragon has a reputation beyond repute

Solved Threads: 1460

Ancient Dragon Ancient Dragon is offline

Offline

Still Learning

Re: Some thingthat we can do in C and Not in C++

Dec 10th, 2005

•

Originally Posted by Narue

>Some thingthat we can do in C and Not in C++
Compile on certain embedded systems.

Yea, but those embdded systems are not ansi C compliant either. There is a different C standard for embedded systems, such is a subset of standard C and embedded systems don't have to use that standard either. Many embedded systems don't support C at all.

•

Join Date: Nov 2005

Posts: 251

Reputation: dwks has a spectacular aura about

Solved Threads: 25

dwks

Offline

Posting Whiz in Training

Re: Some thingthat we can do in C and Not in C++

Dec 10th, 2005

C99:

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
int main(void) {
    _Bool b;
    return 0;
}
int main(void) {
    _Bool b;
    return 0;
}

C89:

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
int main(void) {
    double x = 1 //**/ 10;
    return 0;
}
int main(void) {
    double x = 1 //**/ 10;
    return 0;
}

For the second program, C++/C99 sees the double line as

Help with Code Tags

(Toggle Plain Text)

double x = 1 //**/ 10;

whereas C89 sees it as

Help with Code Tags

(Toggle Plain Text)

double x = 1 //**/ 10;

dwk

Seek and ye shall find.

"Only those who will risk going too far can possibly find out how far one can go."
-- TS Eliot.

"I have not failed. I've just found 10,000 ways that won't work."
-- Thomas Alva Edison

"The only real mistake is the one from which we learn nothing."
-- John Powell