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I am having a few problems with the following code:
int main(){
double a, b, c, d;
cout << "Enter the first complex number:";
cin >> a >> b;
cout << "Enter the second complex number: ";
cin >> c >> d;
cout << "(" << a << "+" << b <<"i)" << " + (" << c << d << "i) = ";
cout << Sum(a,b,c,d)<< endl;
return 0;
}
double Sum(double& a, double& b, double& c, double& d){
double i;
double sum1, sum2;
sum1 = (a + c);
sum2 = i*(b + d);
return (sum1 + sum2);
}
When go to print the function to the screen will not display (7-i) but instead prints the value 7. How do I get around this problem? 
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Because u didn't identify i the output has some errs.Do not identify i by using double,identify it like characters.And finnaly add it to answer.
cout<<(a+c)+(b+d)<<".i"; like this .ok??
However if u want to make some other calculations on complex number theory , you have to identify the special properties of i.
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can any body tell how to catch kebord and moue event on any child window ?
if i didnt know the buttions,and any other relevent components on window then who to get their hwnd and type?
r00d0034@yahoo.com
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if i creat an application of mfc dll and i want to use its classes in c# how will i use it?
plz tell complete steps
may i have to use /clr option in mfc dll application if yes why?
may i haye to write mfc code in between namespace braces
namespace mfcdll
{
}
am i right?
r00d0034@yahoo.com
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Hi Nish,
I am new to programming and have never
heard of a __gc wrapper?
Could you tell how I can find out more about
__gc wrappers?
Thanks
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can u tell me how to wrep csocket class ?
plz nish
r00d0034@yahoo.com
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You don't need to wrap CSocket. Here is how you can use CSocket in an MC++ application using IJW
AfxSocketInit();
CSocket s;
s.Create();
String* cmd = "GET /\r\n\r\n";
String* url = "www.google.com";
if(s.Connect((CString)url,80))
{
s.Send((CString)cmd,cmd->Length);
char buf[127];
while(int n = s.Receive(buf,128))
{
buf[n]=0;
System::Console::WriteLine(buf);
}
}
s.Close();
Nish
Author of the romantic comedy
Summer Love and Some more Cricket [New Win]
Review by Shog9
Click here for review[NW]
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if u could tell that if i want to inherit a class from csocket that might be c# class how to do it ?
relpy in the same way plz sketch a little code for that.
thanks for above code you dont imagine how much it solve mine promblem.
r00d0034@yahoo.com
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SIR,
I dont know how to use csocket class in managed code.
any bode can help me.
plz read this code clearly and
namespace mfcdll
{
class CListeningSocket : public CSocket
{
public:
CListeningSocket(){}
virtual ~CListeningSocket(void){}
//{{AFX_VIRTUAL(CListeningSocket)
public:
virtual void OnAccept(int nErrorCode);
//}}AFX_VIRTUAL
// Generated message map functions
//{{AFX_MSG(CListeningSocket)
// NOTE - the ClassWizard will add and remove member functions here.
//}}AFX_MSG
};
//***********************************************
public __gc class M_listeningsocket
{
public:
M_listeningsocket();
~M_listeningsocket(void);
CListeningSocket *ptr3;
//{{AFX_VIRTUAL(M_listeningsocket)
public:
virtual void OnAccept(int nErrorCode);
//}}AFX_VIRTUAL
void Create(UINT port);
bool Listen(void);
};
}
//********************************************************
///file name (m_listeningsocket.cpp)
M_listeningsocket::M_listeningsocket()
{
ptr3=new CListeningSocket( );
}
M_listeningsocket::~M_listeningsocket(void)
{
delete ptr3;
}
void mfcdll::M_listeningsocket::OnAccept(int nErrorCode)
{
ptr3->OnAccept(nErrorCode);
}
void mfcdll::M_listeningsocket::Create(UINT port)
{
if(ptr3->Create(port))
MessageBox(0,"create succ....",0,0);
else
MessageBox(0,"create not succge....",0,0);
}
bool mfcdll::M_listeningsocket::Listen(void)
{
if(ptr3->Listen())
{
MessageBox(0,"Listen succ....",0,0);
return true;
}
else
{
MessageBox(0,"Listen not succ....",0,0);
return false;
}
}
//********************************************************
if(ptr3->Create(port))
i dont know why it return false in above line what is mistake in the above code can any body tell me i will be very thank full to u.
r00d0034@yahoo.com
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when i use csocket class in manged code
like
CSocket *ptr=new CSocket();
but when i execute if(ptr->Create(port)) it return false.i did not know why it return false can any body tell me i will be very thank full to u.
r00d0034@yahoo.com
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when i use csocket class in manged code
like
CSocket *ptr=new CSocket();
but when i execute if(ptr->Create(port)) it return false.i did not know why it return false can any body tell me i will be very thank full to u.
r00d0034@yahoo.com
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Hi,
I had posted this earlier here, but got no response.
I am trying my luck again (by changing the Subject Line...;))
I have a User Control (created using Man C++)
When I try to place this Control on a form, the Form Designer throws an Exception( 0x80131019).
And I am not allowed to place the control on the form.
This happens when the CopyLocal Property of the Reference is True.
But if I change the CopyLocal property to False,
the Designer wholeheartedly accepts the Conrtrol.
The Form Designer doesnt behave this way with controls made using C# or VB.Net.
Can someone please tell me what difference does CopyLocal property
make to the Form Designer ?
Why does this happen only with Controls created in Managed Cpp?
My control does nothing extraordinary, but just some Drawings in the OnPaint().
Please, somebody Help me.....
Thanks,
Firoz
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Your assembly needs to be registered in the GAC. To do this it first needs a "strong name", sort of like a GUID.
Use SN.exe to generate a strong-name key file. In your AssemblyInfo.cpp file, specify the key file as a parameter to the AssemblyKeyFileAttribute() attribute. Rebuild your assembly.
Now use Gacutil.exe to register the assembly in the GAC. This step can be done in a custom-build-step if desired.
This posting is provided “AS IS” with no warranties, and confers no rights. You assume all risk for your use. © 2001 Microsoft Corporation. All rights reserved.
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how can i make a button control and when it is clicked have the button stay pressed in until its clicked again??? 
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Use a CheckBox and set the Appearance property to Appearance.Button.
James
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Hey coders....
Okay I am just trying to create an instance from HWND and it won't let me.
ie.
<br />
using namespace System;<br />
#using <mscorlib.dll> <br />
<br />
public _gc class COO<br />
{<br />
HWND m_hwnd;<br />
public:<br />
COO(HWND hwnd)<br />
:m_hwnd(hwnd)<br />
{}<br />
};
When I hover over HWND it gives me (typedef HWND__ *HND) so I assume it is recognizing it but for some reason I can't use it....
If anyone could tell me why and how to get around this it would be much appreciated. Thanks... 
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anyone know of a way to add a hyperlink to a form that opens a URL when clicked??
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The Visual C6's resource management really stinks the joint. Is it any better in .NET based on your experiences? I have been working on a multiple project workspace(about 25 projects in a workspace) and more often than not the dialog boxes give you a headache. Is it any better in .NET?
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