Programming Forums > Application Development > C++

tony · Sep 16th, 2005, 9:50 AM

I have posted a simple question about the C++ hello world source code on...

http://www.wikicode.frihost.net/inde...us:Hello_world

Would someone take the time to answer? If you would like, you may simply answer directly on the wiki. Thanks!

Ooble · Sep 16th, 2005, 9:57 AM

I don't think Wikicode's designed for questions. Now, as to your question: take a look at http://www.programmingforums.org/for...7&postcount=49.

tony · Sep 16th, 2005, 10:19 AM

Thank you, Ooble. Do you then recommend "using namespace std" or "std::"? Also, I run wikicode and the discussion pages like the one I sent you are made for people to add their own comments. Everyone is welcome to edit the site.

grumpy · Sep 16th, 2005, 10:24 AM

I don't have an account on wiki, and am not inclined to set one up just to answer a single question.

However;

1) <iostream.h> is not standard C++. Use <iostream> instead. This will require a "using namespace std;" or rename cout to std::cout and endl to std::endl.

2) In C++, <stdio.h> is allowed, but it's use is discouraged (actually deprecated in the C++ standard). It is probably better to use <cstdio> This will require a "using namespace std;" or rename getchar() to std::getchar().

3) Mixing C and C++ style I/O is not a good idea, particularly with standard devices (stdin/cin and stdout/cout), as they are not required to play nicely together. In practice, they often do, but it is a good idea to use either all C I/O or all C++ I/O --- particularly with standard input and output devices. In the C library, use of getchar() is guaranteed to flush output to stdout. Similarly, in C++, reading from std::cin is guaranteed to flush data to std::cout. However, use of getchar() is NOT guaranteed to flush output to std::cout, and reading from std::cin is not guaranteed to flush output to stdout.

4) Unless you like displaying your ignorance of both C and C++, main() should return int. void main() is not guaranteed to work with all compilers.

bl00dninja · Sep 16th, 2005, 5:52 PM

it looks like your question was answered and yeah, don't ask people to sign up for a site in your sig because it's not the more "simple" method as you put it. in short what you want is this:

(Toggle Plain Text)

#include <iostream>
using namespace std;

int main()
{
    cout<<"hello world!"<<endl;

    return 0;
}

Sep 16th, 2005, 9:50 AM	#1
tony Newbie Join Date: Sep 2005 Posts: 2 Rep Power: 0	C++ Question I have posted a simple question about the C++ hello world source code on... http://www.wikicode.frihost.net/inde...us:Hello_world Would someone take the time to answer? If you would like, you may simply answer directly on the wiki. Thanks! __________________ Wikicode: Open-source Code

Sep 16th, 2005, 9:57 AM	#2
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	I don't think Wikicode's designed for questions. Now, as to your question: take a look at http://www.programmingforums.org/for...7&postcount=49. __________________ Me :: You :: Them

Sep 16th, 2005, 10:19 AM	#3
tony Newbie Join Date: Sep 2005 Posts: 2 Rep Power: 0	Thank you, Ooble. Do you then recommend "using namespace std" or "std::"? Also, I run wikicode and the discussion pages like the one I sent you are made for people to add their own comments. Everyone is welcome to edit the site. __________________ Wikicode: Open-source Code

Sep 16th, 2005, 5:52 PM	#5
bl00dninja Programming Guru Join Date: Oct 2004 Location: namespace std Posts: 1,246 Rep Power: 5	it looks like your question was answered and yeah, don't ask people to sign up for a site in your sig because it's not the more "simple" method as you put it. in short what you want is this: (Toggle Plain Text) #include <iostream> using namespace std; int main() { cout<<"hello world!"<<endl; return 0; } #include <iostream> using namespace std; int main() { cout<<"hello world!"<<endl; return 0; } __________________ i put on my robe and wizard hat... Have you ever heard of Plato, Aristotle, Socrates?...Morons.

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Sep 16th, 2005, 10:24 AM	#4
grumpy Programming Guru Join Date: Jun 2005 Location: Adelaide, South Australia Posts: 1,223 Rep Power: 5	I don't have an account on wiki, and am not inclined to set one up just to answer a single question. However; 1) <iostream.h> is not standard C++. Use <iostream> instead. This will require a "using namespace std;" or rename cout to std::cout and endl to std::endl. 2) In C++, <stdio.h> is allowed, but it's use is discouraged (actually deprecated in the C++ standard). It is probably better to use <cstdio> This will require a "using namespace std;" or rename getchar() to std::getchar(). 3) Mixing C and C++ style I/O is not a good idea, particularly with standard devices (stdin/cin and stdout/cout), as they are not required to play nicely together. In practice, they often do, but it is a good idea to use either all C I/O or all C++ I/O --- particularly with standard input and output devices. In the C library, use of getchar() is guaranteed to flush output to stdout. Similarly, in C++, reading from std::cin is guaranteed to flush data to std::cout. However, use of getchar() is NOT guaranteed to flush output to std::cout, and reading from std::cin is not guaranteed to flush output to stdout. 4) Unless you like displaying your ignorance of both C and C++, main() should return int. void main() is not guaranteed to work with all compilers.

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Programming Forums > Application Development > C++

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