Thread: Experienced C programmer lost in C++

for now you could use

Code:

#include <iostream>
using namespace std;

with this, you don't have to use std:: at all, as all of the std:: are already included. so your code would look like:

Code:

#include <iostream>
using namespace std;

int main()
{
	cout<<"Hello there.\n";
	cout<<"Here is 5: "<<5<<"\n";
	cout<<"The manipulator std::endl ";
	cout<<"writes a new line to the screen.";
	cout<<endl;
                return 0;
}

>Can someone first please explain why std:: is everywhere in this book.
Because everything in the standard library is contained in the std namespace. Your book uses one of three ways to get access to the names in the namespace.

>I have never seen this before in C programming at all
Get used to it. Modern C++ is wildly different than C.

>Can experienced C++ programmers please help me.
If your compiler supports it (which it should), use namespaces. They are an excellent way to avoid naming conflicts, but for smaller programs can be annoying. There are three ways to gain access to a namespace:

Code:

#include <iostream>

using namespace std; // "Gimme everything"

int main()
{
  cout<<"Hello, world!"<<endl;
}

Code:

#include <iostream>

// "Only give me what I need, but still let me use simple syntax"
using std::cout;
using std::endl;

int main()
{
  cout<<"Hello, world!"<<endl;
}

Code:

#include <iostream>

// "I'll explicitly qualify names in the namespace, don't do anything special"

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

>>My book made no mentioning of

I suggest you place that book directly in the garbage can, hern. I personally hate the SAMS series....don't ask which book to use, just do a board search - that will give you many suggestions

>Books are expensive
Yes they are. Shop very carefully because a great many of them suck.

>who has programmed for the past 10 years recommended one by Herbert Shildt
*sigh* Don't read Schildt, ever. He earned his entry in the hacker jargon file. Might I suggest a thin book called Accelerated C++ by Koenig and Moo?

> Microsoft Visual C++ 6.0
Does this old thing even know about namespaces?

> An old tutor of mine who has programmed for the past 10 years recommended one by Herbert Shildt
Those that can, do
Those that can't, teach
Those that can't teach, ghost-write for HS

Are there actually any competent teachers in the world? Not only do a huge portion of them get page 1 stuff wrong (like saying main returns void), they also recommend crap books.

>Does this old thing even know about namespaces?
Surprisingly enough, it does.

>Those that can't teach, ghost-write for HS
I thought every Schildt book was just a copy/paste of his first with some key words changed.