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Quote: from helloworld at 3:20 pm on July 17, 2005

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Quote: from Duekiller at 1:35 pm on July 5, 2005

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Sorry to tell you this so late, but your problem is that the libaray that defines cin, is not on the mac because macs have diffrent libraries and shit so you need to grab the mac library (remember C++ is translated into ASSEMBER and then into machine code)

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 What the hell are you talking about? Mac OS X is Unix. Any decent Unix system ships with all the standard ISO C++ libraries. Mac OS X has done so from day 1. The Xcode developer tools ship with all the associated headers and the GNU compiler tools. If you have the tools installed, you can compile anything that is standard ISO C++.  

 

Code:

#include <iostream>    using namespace std;    int main( void )    {    int x;    cout << "Test";    cin >> x;    cout << x;    return 0;    }

 

 
 Works fine for me. Stick it in a cpp file, run g ++ on it and, boom, done.

(Edited by helloworld at 3:22 pm on July 17, 2005)

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Macs use the powerPC architecture and that has diffrent machine instruction codes, meaning that macs will have diffrent binary codes. That is why you cant install windows on a Mac. If you have the windows library then you need the mac specific library.

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Deukiller, im not sure you know what you are talking about. C++ is a high level programming language. You can use the standard libraries anywhere regardless of the Operating System. It is up to the compiler to convert it into machine-readable code.

Asm on the other hand is a low-level programming language, instructions differ from one architecture to another.

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Keep your friends close and your enemies closer...

If you've already done that, then learn about 'namespaces', because it is my guess that this is your problem. I might be wrong, but it's hard to tell without seeing your code. Basically, the object 'cin' is defined within a namespace called 'std'. That means the object's full name is 'std::cin'. You can refer to it like that in your code. This is my preferred method.

If you really want to just refer to it as 'cin', you'll have to import the name 'cin' into your working namespace. You can do that in more than one way. One way is to use:

using namespace std;

This will import all names from the std namespace so that they are accessibly without the 'std::' prefix.

Another way is to use:

using std::cin;

This only imports the one name, 'std::cin'. It's better because you won't pollute your namespace with all sorts of names from the 'std' namespace that you won't use.

If you're going to do it that way, put one of those lines directly after the '#include <iostream>' line.

But like I say, I prefer to just use fully qualified names so as to avoid importing any names at all.

(Edited by Misero at 3:09 am on April 10, 2006)

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"I am against religion because it teaches us to be satisfied with not understanding the world."