How do I make this more efficient?

[Kasracer]

#include <iostream>

int main()
{
        std::cout << "Hello World!" << std::endl;
}

[mendhak]

#include <iostream>

int main()
{  
cout << "Hello World!"; 
}

???

[Acidic]

I've only ever used C++ years ago, I've never known it well by any means. But I never used std::.
I can't remember for sure, but isn't something else included at the top, presumably so you don't always can to type std::

[Kasracer]

Originally posted by mendhak

#include <iostream>

int main()
{  
cout << "Hello World!"; 
}

???

That isn't more efficient

endl flushes teh buffer. Also, you didn't use std:: or using namespace so your code won't compile

Originally posted by Acidic
I've only ever used C++ years ago, I've never known it well by any means. But I never used std::.
I can't remember for sure, but isn't something else included at the top, presumably so you don't always can to type std::

std:: is better than using namespace std;. This way, I can have functions named cout and other stuff named the same as what std has.

[spoiledkid]

I do not think you need to type that, it should work without that thing. std stands for standard output .....

[Kasracer]

Originally posted by spoiledkid
I do not think you need to type that, it should work without that thing. std stands for standard output .....

Um no, std is the namespace in whcih the functions are in. If you used a deprecate header like <iostream.h> then you don't need it, but with the new header style <iostream> you do.

If you try to compile without using std and the new header style, the compiler will have no clue where the function cout and endl are located

[visualAd]

Originally posted by kasracer

#include <iostream>

int main()
{
        std::cout << "Hello World!" << std::endl;
}

Write it in C

#include <stdio.h>

int main(void)
{
        puts ("Hello World");

        return 0;
}

[CornedBee]

Why would you want it more efficient?

If you really want, you can write it directly to the buffer, but...

[Memnoch1207]

here you go
More efficient AND managed code!

using System;

class Class1
{
     public static void Main()
     {
          Console.WriteLine("HELLO WORLD");
     }
}

[kovan]

USE NAME SPACE STD DAMN MEnDHAK

#include <iostream>
using namespace std;
int main()
{
        cout << "Hello World!" << endl;
}

[CornedBee]

Managed code is never more efficient.
C# might be shorter, but this code isn't.

[VBD]

Sorry, I don't know asm

[Kasracer]

Originally posted by CornedBee
Why would you want it more efficient?

If you really want, you can write it directly to the buffer, but...

This thread was a joke to break the forum in. However, how exactly would you write directly to the buffer?

Originally posted by Memnoch1207
here you go
More efficient AND managed code!

using System;

class Class1
{
     public static void Main()
     {
          Console.WriteLine("HELLO WORLD");
     }
}

Eww hell naws. Mine will atleast compile on linux

[alkatran]

QBasic:

Print "HELLO WORLD!"

It doesn't get much shorter than that.

[plenderj]

Originally posted by kasracer
Mine will atleast compile on linux

mono

[CornedBee]

You can access the stream buffer using the rdbuf member function. Then you can use its functions to write directly, avoiding all the formatting and checking stuff that the ostreams do.

[visualAd]

Originally posted by alkatran
QBasic:

Print "HELLO WORLD!"

It doesn't get much shorter than that.

That would make it less efficient though.

[Osiris]

I'll give it a try...

#include<iostream.h>

int main()
{
      cout << "Hello World!\n";

      return 0;
}

i think this would be the code for assembly.

.model     SMALL
.stack      64
.data

msg      DB      "Hello World!", 0Ah, 0Dh, '$'

.code

MAIN      PROC      FAR

      MOV      AX, @DATA
      MOV      DS, AX

      MOV      AH, 09H
      LEA      DX, msg
      INT      21H

      MOV      AH, 4CH
      INT      21H

MAIN      ENDP
END      MAIN

[CornedBee]

DOS assembly...

[MartinLiss]

Please include the language in all subject lines in this forum.

[dis1411]

using just the necessary cout code instead of the entire header

also maybe feeding the ascii values instead of a string would be faster

no way im gonna look it up tho..

[CornedBee]

The "necessary" cout code is quite a lot: The complete definitions of basic_ostream, basic_ios, ios_base, basic_ostreambuf and a few other minor things.

And feeding ASCII values makes no difference.

[dis1411]

Originally posted by CornedBee
And feeding ASCII values makes no difference.

y is this? are they converted when compiling the prog?

[Kasracer]

Originally posted by dis1411
y is this? are they converted when compiling the prog?

Why do you think feeding it ascii values would speed it up? A string is made up of ascii values.....

[dis1411]

b/c SOMETHING has to convert the letters to their respective ascii values

is this case youre the one who's doing it, not the computer

however, if the compiler converts them for u, it wouldnt make a difference when the program is run

[CornedBee]

Actually the operating system converts the scan codes from your keyboards to the ASCII values that your text editor inserts into the program source code. It's the text editor (or the OS) that has to convert the ASCII codes to the character glyphs so you can see them.

So many people, even among programmers, simply don't know or realize that there is no difference to a computer between characters and their ASCII codes except in usage - and that is up to the programmer to decide. To the computer, it's all just numbers.

[Magiaus]

Ok,as far as topic asm is the most effeciant. What I really wanted to say though is is it just me or is MartinLess well more of of a dork then a programmer has a right to be. No offence Martin but was it nessecary to talk about the topic title and what if I want to use [ c o d e ] and [ / c o d e] tags because I'm posting non VB code?

I wish I had my asm code resources I can put out Hello World out in three lines of asm if I remember right..

[MartinLiss]

Originally posted by Magiaus
...What I really wanted to say though is is it just me or is MartinLess well more of of a dork then a programmer has a right to be. No offence Martin but was it nessecary to talk about the topic title and what if I want to use [ c o d e ] and [ / c o d e] tags because I'm posting non VB code?....

Well if you are going to offend me at least spell my name right Anyhow I mentioned the topic title because if you had read Acidic's sticky you would see that he is requesting that people do that and it's my job as a moderator to remind people of those things.

I don't understand what you mean about using [code][/code] tags.

[Magiaus]

I always think that when I read your signiture and I was trying to rib you, but I failed