64 bit in Visual Studio 2010

Question

when can i use 64 bit word in visual studio 2010 ? I think about Visual C ++ .

Answer 1

when can i use 64 bit word in visual studio 2010 ? I think about Visual C ++ .

What do you mean exactly?
 
If you compile for x64, then all pointers, and size_t, and various other things become 64-bit. But int and long are still 32-bit.
 
A carefully written x86 program will compile correctly for x64, but if you have implicit conversions between (say) int and size_t you will have to make some changes.
 

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David Wilkinson | Visual C++ MVP

Answer 2

Thats words are on increase ; kind of type  can I to use as 64 bit ; i think about type as int , long , account types . Can i works for it in express version  ?

Yours Sincerely

Rafał Bator

Answer 3

What kind of type can i works instead int and long ?

Yours Sincelery

Rafał Bator

Answer 4

Data types of long long are equivalent to __int64. It can hold a 64-bit integer. This is true even for standard 32-bit programs.

It's not clear from your question whether you need to compile an x64 program. If you need to, instructions are found here: How to: Configure Visual C++ Projects to Target 64-Bit Platforms

There appears to be specific issues related to Visual Studio Express 2010. See this discussion:

http://social.msdn.microsoft.com/Forums/en-US/Vsexpressvc/thread/4ce313a3-cb5f-43fc-bbb9-50233f8ed11b

Answer 5

What kind of type can i works instead int and long ?

In Visual C++ you can use INT64 or __int64.
 

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David Wilkinson | Visual C++ MVP

Answer 6

I have event : Button event

 

 

int a[5][4];

                               a[0][0]=Convert::ToInt32(textBox1->Text);

                              

textBox21->Text=a[0][0].toString();

 

 

How walk from int32 to int64 in this example ? I have express version .

Answer 7

I have event : Button event
 
int a[5][4];
 
                               a[0][0]=Convert::ToInt32(textBox1->Text);
 
textBox21->Text=a[0][0].toString();
 
How walk from int32 to int64 in this example ? I have express version

Use ToInt64 and a 64-bit data type.
 
Another 64-bit data type in Visual C++ is long long.
 

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David Wilkinson | Visual C++ MVP

Answer 8

that is example . Obviously toString is mistake it must be big letter and ToString() instead toString .

Yours Yincerely

 

Rafał Bator

Answer 9

//think You about that ? :

int64 a[5][4];

a[0][0]=Convert::ToInt64(textBox1->Text);

textBox21->Text=a[0][0].ToString();

// i have VC++ Express from Visual Studio 2010

//Yours Sincerely

//Rafał Bator

 

Answer 10

//think You about that ? :
 
int64 a[5][4];
 
a[0][0]=Convert::ToInt64(textBox1->Text);
 
textBox21->Text=a[0][0].ToString();

Well, does it work?
 
Shouldn't it be __int64, not int64?
 

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David Wilkinson | Visual C++ MVP

Answer 11

//think You about that ? :

_int64 a[5][4];

a[0][0]=Convert::To_int64(textBox1->Text);

textBox21->Text=a[0][0].ToString();

// i have VC++ Express from Visual Studio 2010 Express

//Yours Sincerely

//Rafał Bator

Answer 12

i have it :

1>------ Build started: Project: Gauss1, Configuration: Debug Win32 ------

1> Gauss1.cpp

1>c:\users\rafal\documents\visual studio 2010\projects\gauss1\gauss1\Form1.h(481): error C2039: 'To_int64' : is not a member of 'System::Convert'

1> c:\program files (x86)\reference assemblies\microsoft\framework\.netframework\v4.0\mscorlib.dll : see declaration of 'System::Convert'

1>c:\users\rafal\documents\visual studio 2010\projects\gauss1\gauss1\Form1.h(481): error C3861: 'To_int64': identifier not found

========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

 

Iput it below .

Yours Sincerely

 

Rafał Bator

Answer 13

in time where int and Int32 is a member of class System::Convert , _int64 and To_int64 is not .

 

Yours Sincerely

Answer 14

//ok , all right .

Declaration _int64 a[][] ;

and Convert::Toint64(textBox1->Text);

//and all right

 

Yours Sincerely

Rafał Bator

Answer 15

when can i use in thread above 4 GB Ram /thread , e.g 32 GB , or more e.g 64 GB Ram  , e.g for solution of array in this size 64 : GB Ram

I have VC++ Express in Visual Studio 2010 express , need I other ?

 

 

Yours Sincerely

Rafal Bator

Answer 16

If you are intending to use large quantities of RAM, then you must recompile using the x64 compiler. You cannot use Visual Studio C++ Express edition for this. You will need to upgrade to Professional Edition.