need

[Raj]

tell me one program that works on c but not on c++?

 

[Wolfnoliir]

tell me one program that works on c but not on c++?

A module for the Linux kernel maybe.

 

[Michael Tsang]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

tell me one program that works on c but not on c++?

main(){ /* implicit int declaration */
int new=0; /* reserved word in C++ */
printf("%d\n",new); /* implicit function declaration */
return 0;
}
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

iEYEARECAAYFAkqnuE0ACgkQG6NzcAXitM9NMQCcCxKD3a3FUo9lcdjPXor1nnnO
OOIAn113NrCKcB4yK8YHlAhJD26pRKgv
=Ls3l
-----END PGP SIGNATURE-----

 

[Pep]

A module for the Linux kernel maybe.

main()
{
std::cout << "hello world" << std::endl;
}

The C++ std:: class does not exist in C

 

[Victor Bazarov]

main()
{
std::cout << "hello world" << std::endl;
}

The C++ std:: class does not exist in C

The OP asked for the other way around.

V

 

[Default User]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


main(){ /* implicit int declaration */
int new=0; /* reserved word in C++ */
printf("%d\n",new); /* implicit function declaration */
return 0;
}

Implicit function declarations have been out of C since the release of
the 1999 standard. Even under c89, use of a variadic function without a
prototype in scope is undefined behavior.



Brian

 

[Ian Collins]

tell me one program that works on c but not on c++?

Whatever happened to please?

 

[Paul N]

tell me one program that works on c but not on c++?

#include <stdlib.h>

int main(void) {
int *ptr = malloc(10);
return 0;
}


In C++ you need to cast the result from malloc, which is unnecessary
(and discouraged) in C.

Alternatively, as Michael Tsang pointed out, you could use an
identifier (such as "new") which is a keyword in C++.

Paul.

 

[Joshua Maurice]

Don't forget sizeof('x'). It's sizeof(int) or sizeof(char), depending
on if it's compiled as C or C++.