C++ newbie question

Ok, so I am just learning C++, don't get annoyed. I just want to know why this ends right away and doesn't stay in dos mode when I compile and run it in C++.

Code:

---

#include <iostream.h>
int main()
{
  cout<<"Hello World!";
}

---

Ask a stupid question, get a stupid answer.


Thanks :rolleyes:

The code outputs to a console window, which I thin kit slightly different to a DOS window. Anyway, that's just what happens when your code has finished executing. In the MSVC++6 IDE it waits for you to press a key when you've finished, but that's just for testing purposes.

Open up command.com and run it from the command line. Alternatively, #include <stdlib.h>, and put system("pause"); at the end of your program.

You have declared 'main' to return an int, which is good coding practice, but you don't return anything! Change your code to the following:

Code:

---

#include <iostream.h>
int main()
{
  cout<<"Hello World!";
 
  //Now we return 0!
  return 0;

}

---

Also, when you compile, set the compile option to Win32 Release, as opossed to Win32 Debug. Hope this helps!

Bye

You could put

#include <iostream.h>

void main()
{
cout << "Hello World!" << endl;

char a;

cout << "Press Any Key...";

cin >> a;
}

Which should work, basically it waits for u to press a key before quitting.

Or...

You could open a MS-DOS Prompt and run it by using

cd YourFolder

and then

YourApp.exe


That's what I did until I got bored of C++ since it seemed just like QBasic, but without the ease, so I moved on to Visual C++ which is more fun.

This should work.

Code:

---

#include <iostream.h>
void main()
{
    int a;
    cout << "Hello World!";
    cin >> a;
}

---

All your information has helped me much.

I think I am going to like C++ :rolleyes:.

You will...it's a nice language. It's not perfect (some parts of C++ are a bit vile), but it's damn good for what it gives you.

Quote:

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Originally posted by [Digital-X-Treme]
You have declared 'main' to return an int, which is good coding practice, but you don't return anything! Change your code to the following:

Code:

---

#include <iostream.h>
int main()
{
  cout<<"Hello World!";
 
  //Now we return 0!
  return 0;

}

---

Also, when you compile, set the compile option to Win32 Release, as opossed to Win32 Debug. Hope this helps!

Bye

---

By the way, what does return 0; do?

The return keyword returns the specified value, and exits the function. In C/C++, returning 0 from main indicates success.

Quote:

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Originally posted by V(ery) Basic
That's what I did until I got bored of C++ since it seemed just like QBasic, but without the ease, so I moved on to Visual C++ which is more fun.

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That is the SINGLE most IDIOTIC reason I have EVER heard for not learning 'standard' C++...And gee...I wonder why Qbasic is like it...

p.s. Visual C++ is gay. :)