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[Request] Help on C++
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patsmokeswii
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PostPosted: Tue Jan 22, 2008 10:21 am    Post subject: [Request] Help on C++ Reply with quote
Well, I am trying to begin programing, and learning how to do stuff, so I am wondering, why is it I get an error with "Hello World" in Microsoft visual studio '08.


This is what I write:

Code:

#include <iostream>
using namespace std;

main()
{
  cout << "Hello World!" << ;
 
}


I used Buzz's tutorials, which are video tutorials by the way, and thats how he wrote it.

I get this error saying I have no submain therefore the program can't be compiled and run properly. Any help?

Edit:
This is how I built the program this time, it ran, but just exited right away..

Code:

#include <iostream>
using namespace std;

sub main()
{
    cout << "Hello World!" ;
}
End sub main


Whats wrong?

Last edited by patsmokeswii on Tue Jan 22, 2008 11:50 am; edited 1 time in total
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killersamurai
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PostPosted: Tue Jan 22, 2008 11:22 am    Post subject: Reply with quote
You need int or void in front of main. Also, you need to put something after the <<. If not, you don't need it.
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hcavolsdsadgadsg
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PostPosted: Tue Jan 22, 2008 2:22 pm    Post subject: Reply with quote
how the hell did you manage to compile that?

Code:
#include <iostream>

int main(void)
{
   std::cout << "Hello world!";
   return 0;
}
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patsmokeswii
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PostPosted: Tue Jan 22, 2008 3:04 pm    Post subject: Reply with quote
Easy, by pressing F5 XD.

It compiles and runs the program.

But, I might just get another compiler.
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HomerSexual
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PostPosted: Tue Jan 22, 2008 3:25 pm    Post subject: Reply with quote
Code:
#include <iostream>

int main()
{
std::cout << "Hello CEF\n";
std::cin.get();
return 0;
}


You do not use vb functions such as sub main

You use int preferably so you have a return value. This means if the commands are run successfully the program will return a value of 0. If not, something went wrong.
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patsmokeswii
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PostPosted: Tue Jan 22, 2008 3:29 pm    Post subject: Reply with quote
blankrider wrote:
Code:
#include <iostream>

int main()
{
std::cout << "Hello CEF\n";
std::cin.get();
return 0;
}


You do not use vb functions such as sub main

You use int preferably so you have a return value. This means if the commands are run successfully the program will return a value of 0. If not, something went wrong.


I get so many errors with that one though. The only one that works is the first one, but it just instantly closes.
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hcavolsdsadgadsg
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PostPosted: Tue Jan 22, 2008 4:34 pm    Post subject: Reply with quote
post the errors.
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Noz3001
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PostPosted: Tue Jan 22, 2008 5:33 pm    Post subject: Reply with quote
lol, thats what you get when you learn VB 1st.... Rolling Eyes


Code:
End sub main


Rofl
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patsmokeswii
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PostPosted: Tue Jan 22, 2008 5:36 pm    Post subject: Reply with quote
OK, here it is:





Code:
'Sub Main' was not found in 'project 1'


Thats the error I get.

Edit: Noz, I didn't learn VB first. To make it work, I had to put that.. I don't know why... that was the only way I wouldn't get the error.

I am just starting to learn now, I have never ever studied VB...
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Noz3001
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PostPosted: Tue Jan 22, 2008 5:44 pm    Post subject: Reply with quote
You ARE using a C++ compiler right?
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patsmokeswii
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PostPosted: Tue Jan 22, 2008 6:26 pm    Post subject: Reply with quote
noz3001 wrote:
You ARE using a C++ compiler right?


M.V.S. '08

Why?
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Noz3001
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PostPosted: Tue Jan 22, 2008 6:35 pm    Post subject: Reply with quote
Code:
#include <iostream>
using namespace std;

sub main()
{
    cout << "Hello World!" ;
}
End sub main


If that compiles in it..... ;

Code:
#include <iostream>
 
int main()
{
       std::cout << "Hello CEF\n";
       std::cin.get();
       return 0;
}


But that doesn't...;

It simply isn't the correct compiler.
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hcavolsdsadgadsg
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PostPosted: Tue Jan 22, 2008 6:37 pm    Post subject: Reply with quote
just take a picture of these errors, and don't crop it so we can see the IDE. Because I don't know how it's possible for that one snippet to even think about compiling.
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wunder312355
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PostPosted: Tue Jan 22, 2008 6:52 pm    Post subject: Reply with quote
This should work 100%
Its the bare minimum using namespace.

Code:
#include <iostream>

using namespace std;
int main()
{
   cout << "Hello World!" << endl;
   system("pause");
}
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atom0s
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PostPosted: Tue Jan 22, 2008 8:26 pm    Post subject: Reply with quote
thefun25 wrote:
This should work 100%
Its the bare minimum using namespace.

Code:
#include <iostream>

using namespace std;
int main()
{
   cout << "Hello World!" << endl;
   system("pause");
}



You should avoid using syste("pause") to catch input to "freeze" the console from closing. This creates a huge overhead in your program and performance loss occurs.

http://www.gidnetwork.com/b-61.html

Instead, use:

Code:
cin.ignore();
cin.sync();

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