asm + c++

[Amon Ra]

what is the usefulness of using assembly in c++? speed?
thanks

[Zaei]

Speed, confusion (to the un-initiated =), the ability to look cool, the best way to destroy code portability... Lots of reasons =).

Z.

[ChimpFace9000]

I gotta say, im kinda tired of these kind of questions.

[kedaman]

You should not learn assembly in conjunction with C++, it's already a mess as it is. If you want to look cool go ahead, but if you want any results, stay away from assembly.

[Amon Ra]

ok i will follow then... =) sorry chimpface, i just wanted to know

[Zaei]

Ther will forever be questions that will be answered over and over. "C++, or Java?", "D3D or OGL?", "Is there really a God?"... Nothing will do except to swallow an angry RTFM, and answer.

Z.

PS: no offense, Amon Ra, just observing the kind of posts that I have seen in other places =).

[kedaman]

There's no good answer for everyone, only an answer for someone, so althought it looks like the same question, it depends on who asks it. I gotta say that i've been answering same questions in different ways as I start to think in new ways, good thing about learning is that you'll become familiar with the subjectivity of all matters...
lol, wasn't really what I was going to say, but doesn't matter

[Amon Ra]

how would you tell if someone used c++ or c? (besides the OOP stuff)?

[Amon Ra]

could i get some good tuts for c? thanks

[Zaei]

No classes, the lack of exceptions, an exclusive use of malloc, are all good clues as to whether a program is C, or C++.

Z.

[FantastichenEin]

Don't bother learning C before C++, just go straight into C++.
Learn OO programming techniques.

Learning C programming will make it harder to learn OO in C++.

[Amon Ra]

ok.. thanks guys

[parksie]

Originally posted by kedaman
OOP stuff, and Generic Stuff, exceptions as Zaei mentioned and new instead of malloc, C++ is backward compatible which allows C programmerse to program in C++, and just by experience you can show who's been using what.

Not totally. This is valid C code (not for much longer if the standard gets its act together!):

#include <stdio.h>
#include <stdlib.h>

main() {
    int *ptr = malloc(5 * sizeof(int));

    for(int i = 0; i < 5; ++i) {
        printf("%d", ptr[i]);
    }

    free(ptr);

    return 0;
}

Just try and compile that in a C++ compiler

[CornedBee]

Even if you can't derive it from the not-using of classes and such, there are some things that will help you. Parksies code for example would be neither C nor C++ by the exact standards . C++ standard does not allow this line:
int *ptr = malloc(5 * sizeof(int));
You need an explicit cast when casting a void* (as returned by malloc) to any other pointer type.
neither does it allow this line:
main()
Every function needs a defined return type, C just assumes int.
C standard does not allow this line:
for(int i = 0; i < 5; ++i)
variables may only be declared at the start of a block, that is, directly after an opening { bracket. You would have to write:
main()
{
int i;
// ...
for(i = 0; i < 5; ++i)
{
// variables may be declared here
// ...
}
}
Another thing:
typedef struct
{
// members:
int i, s, e;
} MYSTRUCT;
This will only appear in code that was made to work with C, so you don't have to write
struct MYSTRUCT st;
Exclusive use of /* such */ comments is also a sign of C code. (Although most C compilers now support // and the current C standard requires it).

That's all I can think of at the moment.