Ok first off i'm new to this site, so if this is the wrong place for this question please tell me where it should be, or answer the question if possible. OK i'm just beginning my study of C++ i am starting out with the traditional hello world exercise. Now i'm using dev C++ and my book said to put in
#include <iostream.h>

int main()
{
cout << "Hello World!\n";
return 0;
}
That didn't work even though i copied and pasted right from the book and after much hours of research for some reason it had to be:
#include <iostream>

int main()
{
std::cout <<"Hello World!" << std::endl;
return 0;
}
anyway that doesn't bring up errors like the last one did, but when i execute it I see the black dos screen thing flash really quickly, so fast i can't even see if it says Hello world or not. I thought it was spose to stay up so i could read it. What's going wrong?????

If it compiled, it worked.

If you really want it to stay up, add this line just after the cout line:
system("PAUSE");

Awesome that works now, thanks. Why didn't our exercise book tell us about that. Did they expect us to read it in like 1/10th of a second??? also why did my book's command not work, and the one i had to find on the internet work, does it have to do with my complier, or what?

why did my book's command not work
They don't have your version of your C++ library. There's usually small changes between libraries, but it's more-or-less the same. For reference, #include <iostream> is the more correct version.

Why didn't our exercise book tell us about that.
Two guesses: They expected you to run the compiled version from the Command Prompt, or their IDE automatically keeps the window open for you. Visual Studio automatically does it, for example.

Like #3 the book assunes you're at the prompt.

I think it's standard to precede include[s] with #. Dunno how the book spaced that out. Wrong book?

=====================================
If at first you don't succeed, you're about average.

M2

The C language uses #include <iostream.h>
C++ uses #include <iostream>

"Computer security." — Oxymoron

Hio tony,

Good ol Borland TCPP 1 uses #include <iostream.h>.

=====================================
If at first you don't succeed, you're about average.

M2

If you don't want to use the std:cout stuff

put the following under the includes.

using namespace std;

If you don't want to use the system(pause)

open up the command prompt and run your code from
there.