Site tutorials

I'm vary new to C++, and i didnt want to spend any money on books untill i knew i was going to stick with it. so the tutorials on this web site are great. i'm not vary far though.

but i have a problem runing the tutorial programs. i'm using Dev-C++. and i havnt even been able to get the first example to run, i've tried them all.

heres the first one.

Code:

---

#include <iostream.h>
int main()
{
  cout<<"HEY, you, I'm alive!  Oh, and Hello World!";
  return 0;   
}

---

thats extramly simple, and i understand how it works and all, but for the life of me, i can't get Dev-C++ to run it.

i hit the compile button, and what i compile it as doesnt work.

i hit the run button, and it wont run.

can someone tell me how to get this to work. how am i suposed to know if i'm understanding the lessons if i can't mess around with what i've learned.:confused:

you need to give more info, such as:

1) is it a win32 application project, or a console project?

2) what errors/warnings is it giving



however, dont use iostream.h, it is depreciated, use:

Code:

---


#include <iostream>
using namespace std;

---

instead.

ok, wo the tutorials on the web site aren't vary good then? because i got that directly from the first one.

1) i'm a little confused... when i make the new project for it i made is a windows application. is that what you ment? should i make is a console application instead?

2)i haven't been getting any errors.

Another problem you may find with dev-cpp if you run your program from the IDE is that the console window will close when the program terminates, which will be practically immediately for a simple hello world program. There are various simple solutions, one of which is to put the following line just before the return statement.

cin.get();

So, one of the two following should compile OK. If neither of them does, tell us what errors you get:

Code:

---

#include <iostream.h>

int main()
{
    cout << "Hello world." << endl;
    cin.get();
    return 0;
}

---

Code:

---

#include <iostream>
using namespace std;

int main()
{
    cout << "Hello world." << endl;
    cin.get();
    return 0;
}

---

Quote:

---

Originally posted by Aalmaron
1) i'm a little confused... when i make the new project for it i made is a windows application. is that what you ment? should i make is a console application instead?

---

Yes, for what you're doing at the moment, create console applications. They'll run in a console window.

thank you! both of those worked. i kept getting the dos promt oppen, but it would close right away with the other code. this works fine though. thanks!

beat me to it omnius. a reccomendation I have for you aalmaron is to use google, it's a great tool, and almost all the questions you could ever imagine are on some site or another

Your code is good for beginners. But it's better to use specific stds:

Code:

---

using std :: cin;
using std :: cout;

---

under the includes. But, even better to use them at the time you have them in your code:

Code:

---

std :: cout << "Hello World!";
std :: cin.get();

---

Better, but the code is fine with namespace std.

- SirCrono6

ok i'll try to google my questions, but i dont think that would have helped me here, since i wanted to know whatw as wrong with the code.

SirCrono, i'm still a brand new beginer, i dont even know what std is :p i'll learn though :)

Std is short for standard. Correct me if I'm wrong.

- SirCrono6

The tutorials on this site need to be updated. Unless somebody beats me to it, I'll rework them sometime in the near future and see what webmaster thinks.

>Std is short for standard. Correct me if I'm wrong.
Actually, it is short for sanctioned. It's a common mistake, thinking that std is short for standard, but if you compare the dictionary entries, sanctioned is actually a better fit. The Standards committees get a good laugh out of seeing people confuse std with standard.

Quote:

---

Originally posted by Prelude
>Std is short for standard. Correct me if I'm wrong.
Actually, it is short for sanctioned. It's a common mistake, thinking that std is short for standard, but if you compare the dictionary entries, sanctioned is actually a better fit. The Standards committees get a good laugh out of seeing people confuse std with standard.

---

Really? I didn't see a smiley so it looks like you're being serious.

If so:
Merriam-Webster's Dictionary
Main Entry: STD
Pronunciation: "es-(")tE-'dE
Function: noun
Etymology: sexually transmitted disease
Date: 1976
: any of various diseases transmitted by direct sexual contact that include venereal diseases (as syphilis, gonorrhea, and chancroid) and other diseases (as hepatitis A, hepatitis B, giardiasis, and AIDS) that are often or sometimes contracted by other than sexual means
-------------------------------------------
Main Entry: std
Function: abbreviation
standard
-------------------------------------------
Main Entry: STD
Function: abbreviation
Etymology: New Latin sacrae theologiae doctor
doctor of sacred theology
========================
And at Acronym Finder:
STD Doctor(ate) of Sacred Theology (degree)
STD Sexually Transmitted Disease
STD Standard
STD Stunde (German: Hour)
STD Safely Tolerated Dose
STD Salinity Temperature Depth
STD Santo Domingo, Venezuela - Mayor Humberto Vivas Guerrero (Airport Code)
STD São Tome and Principe Dobra (ISO currency code)
STD Saves the Day
STD Saves the Day (band)
STD Scheduled Time of Departure
STD Science and Technology Division
STD Second To Die (life insurance)
STD Security Tools Distribution (Knoppix)
STD Selective Transmit Diversity
STD Set Direction Flag
STD Severe Tire Damage (band)
STD Short Term Disability
STD Sigma Tau Delta (Sorority and English Honors Society)
STD Simplified Trellis Decoder
STD Single-Trial Decoding
STD Singly-Testable Dependent
STD Small Target Detection
STD Society for Theological Discussion
STD Software Test Description
STD Software Test Document
STD Solar Terrestrial Dispatch
STD Spatial-Temporal Detector
STD Standard Offline Test Driver
STD Standard Trunk Dialing
STD Standing
STD Star Destroyer (Star Wars)
STD State Transition Diagram
STD Steady
STD Step Transaction Doctrine
STD Steward
STD Storage Technology Division
STD Stud Book
STD Student Technical Director
STD Stunden (German: Hours)
STD Subscriber Trunk Dialing
STD Subscriber Trunk Dialling
STD Swimmer Transportation Device
STD System Technology Demonstrator
STD System Test Directive
STD Systems Target Decoder (MPEG systems)
===========================

No sanctioned. Interesting. Must not have reached popular use yet.

>Really?
No, not really.

>I didn't see a smiley so it looks like you're being serious.
I was taking the "humor by ridiculousness" rather than "humor by smiley" approach. But if you look at the definitions of standard and sanctioned, sanctioned actually does fit better for our use of the term.

And so as not to confuse anyone further: :D:D:D:D:D:D:D:D:D

;)

Um... I'm confused =|. So it does or doesn't. I sort of got it, but um, no... I didn't... So?

- SirCrono6, :confused:

Sexually Transmitted Disease

gg

lol.......that was good people. It looked weird, but I thought Prelude was being serious. :) Good stuff people. Luckily you gave us the right answer let on, I could see myself arguing already...

Me-"Damint it stands for sanctioned"
someonelse-"You're wrong.......Why do you say that"
Me-"Because Prelude said it that's why!"

Trust me, those tutorials are EXTREMELY out dated. I understand how you don't wanna spend money (yet) on programming, but here's a good suggestion: go to the library and get a book on C++. Don't get books that were printed back in the 19xx , cuz they are as old as da tutorials on this site. Then, if you know you're interested, start buying books. Good C++ books out there should give many examples on usage of the language and should be understandable even by dummies.Try <Ivor Horton's Beginning C++> if you like, cuz that's the one I read. One more thing, instead of using cin.get() , you can also use system("PAUSE") . It prompts the user to press any key before closing.

Code:

---

#include <iostream>
using namespace std;

int main()
{
    cout << "Hello world." << endl;
    system("PAUSE");
    return 0;
}

---

Quote:

---

Originally posted by Cris987
One more thing, instead of using cin.get() , you can also use system("PAUSE") . It prompts the user to press any key before closing.

---

There are operating systems that do not have the PAUSE command, so I'd recommend not using system("PAUSE"); because of it's lack of portability. And cin.get()
1) does basically the same thing
2) doesn't rely on an expensive system call
3) is already part of the compiler
4) is fully portable to any C++ compiler

Quote:

---

Originally posted by SirCrono6

Code:

---

std :: cout << "Hello World!";
std :: cin.get();

---

---

why is this better than

Code:

---

cout << "Hello World!";
cin.get();

---

>why is this better than
If you don't make the names cin and cout visible, it's better because your way wouldn't compile. Otherwise it's a matter of style.

Some folks believe that you shouldn't "bring in" an entire namespace into the global namespace with "using namespace std;"

I have not problems with bringing in the entire "std" namespace into an application - if you do end up with namespace collisions, the compiler will let you know.

gg