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Please try the following sample code,
int main()
{
int a = 10;
int b = 20;
int& pi = a;
pi = b;
return 0;
}
regards,
George
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See this[^] thread if helpfuls for you.
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Thanks Hamid,
I have read the link, but I do not think it relates to my question. The discussion is about const reference to temporary object, but I am talking about whether int const& or const int& is better. 
regards,
George
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No it was for const& not your question I think its helpful for you,ok? 
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Sure, helpful. Thanks Hamid!
regards,
George
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Thanks for your continuous help, Hamid!
Hope we can always have other topics to discuss in the future.
regards,
George
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It depends to your questions,you must ask easy question. 
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Hi all,
I need to determine during runtime whether I'm dealing with a 32-bit or 64-bit OS, in order to decide which .NET installation file to run.
What's the way of knowing that? Is there a certain registry entry I should read in order to retrieve this information?
Thanks,
Eyal.
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Hi,
After fast look, it seems like:
The first link does not support 64-bit OS (e.g windows xp x64).
The second is a C# project which I can't use since .NET framework is not installed - that's my project purpose: check if .net is installed, and if not - install it.
Thanks!
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Hi,
Our client have a printer and its shared using "Nexus XFSConnect Branch Edition". Application software is communicating with Nexus layer and access the printer. We need to access that printer from another application. But we don't have permission to access Nexus layer. Then the only option is, we have to write a wrapper to communicate with XFS (http://en.wikipedia.org/wiki/CEN/XFS[^]) layer.
I got XFS specifications and SDK also. But it seems complicated. Is anyone has a C++ or MFC code to access a service on XFS? I can manage the device specific calls. Just need a code to establish a session and request device access from XFS. Please help me on this.
Regards,
Buddhika
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I Used 'RegSetValue(..)' to add a leaf to the registry. It came out NOT as a new Leaf' but as a new Branch by the Key Name, and the Value added under "Default". How do I get a New Leave.
Regards Bram.
Bram van Kampen
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RegCreateKey [^] or RegCreateKeyEx [^]
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
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Thanks,
Yes, I'm aware of that, but, when I write:
RegCreateKeyEx(HKEY_LOCAL_MACHINE,"Software\\MyCompany\\Product\\,
0,NULL,REG_OPTION_NON_VOLATILE,KEY_WRITE,NULL,&Key,NULL)
and then
RegSetValue(Key,"Path",REG_SZ,"C:\\MyDir",cbData);
I end up with:
HKEY_LOCAL_MACHINE\\Software\\MyCompany\\Product\\Path\\
Default=C:\\MyDir
I want to end up with:
HKEY_LOCAL_MACHINE\\Software\\MyCompany\\Product\\Path=C:\\MyDir
I.e. I want to create a Leaf named "Path", I get a Branch named Path
Bram van Kampen
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Bram van Kampen wrote: I want to end up with:
HKEY_LOCAL_MACHINE\\Software\\MyCompany\\Product\\Path=C:\\MyDir
I.e. I want to create a Leaf named "Path", I get a Branch named Path
RegCreateKeyEx(HKEY_LOCAL_MACHINE,"Software\\MyCompany\\,
0,NULL,REG_OPTION_NON_VOLATILE,KEY_WRITE,NULL,&Key,NULL)
RegSetKeyValue(key, "Product", "Path", REG_SZ, "C:\\MyDir",cbData);
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Thanks!
yes, Thats's great! That function is oly four days old.
Requires Vista though. There must be another way which works in XP.
Bram van Kampen
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RegSetValueEx ?
RegCreateKeyEx(HKEY_LOCAL_MACHINE,"Software\\MyCompany\\Product\\,
0,NULL,REG_OPTION_NON_VOLATILE,KEY_WRITE,NULL,&Key,NULL)
and then
RegSetValueEx (Key,"Path", 0, REG_SZ,"C:\\MyDir", cbData);
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how can i capture a id from a clicked button, in a game
i search and found only things for classes and dialogs, but not for a game
i want to captude an id from the Flight Simulator, some buttons and controls
how can i do it?
tks
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u mean ID of control in a game UI? usually games use their own GUI system, i don't think it behaves like dialog controls to give an ID.
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I'm trying to complete the code for the following program, learning switch statements. But my text shows very little in the way of examples, and I just don't know where to go here. I started to try it, but just don't know. Can somebody PLEASE help? Thanks.
// **************************************************************************
//
// Astrology.cpp
//
// Prompts for the user's birthday and returns the user's
// astrological sign.
// **************************************************************************
#include <iostream>
int getMonth();
// Precondition: User will enter birth month
// Postcondition: Returns 1 <= birth month <= 12
int getDay();
// Precondition: User will enter birth day
// Postcondition: Returns 1 <= birth day <= 31
int getSign(int month, int day);
// Precondition: 1 <= month <= 12, 1 <= day <= 31
// Postcondition: Returns integer corresponding to astrological sign for
// given month and day starting with Capricorn = 1.
int main()
{
using namespace std;
int month;
int day;
//
// Get birth month and day.
//
month = getMonth();
day = getDay();
//
// Determine and print the user's sign
//
cout << "Your sign is ";
// --------------------------------
// ----- ENTER YOUR CODE HERE -----
// --------------------------------
switch (getSign)
{
case 1:
if ((month == 1) && (1 <= day <= 19))
cout << "Capricorn.";
break;
}
// --------------------------------
// --------- END USER CODE --------
// --------------------------------
cout << endl;
}
int getMonth()
{
using namespace std;
int month;
cout << "Enter the month of your birthday (1-12): ";
cin >> month;
while ((month < 1) || (month > 12))
{
cout << "Month must be between 1 and 12; please re-enter: ";
cin >> month;
}
return month;
}
int getDay()
{
using namespace std;
int day;
cout << "Enter the day of your birthday (1-31): ";
cin >> day;
while ((day < 0) || (day > 31))
{
cout << "Day must be between 1 and 31; please re-enter: ";
cin >> day;
}
return day;
}
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But I do need some advice on what to do to give the user an option to continue using the program or to exit. My completed code is below. Thanks.
// **************************************************************************
//
// Astrology.cpp
//
// Prompts for the user's birthday and returns the user's
// astrological sign.
// **************************************************************************
#include <iostream>
int getMonth();
// Precondition: User will enter birth month
// Postcondition: Returns 1 <= birth month <= 12
int getDay();
// Precondition: User will enter birth day
// Postcondition: Returns 1 <= birth day <= 31
int getSign(int month, int day);
// Precondition: 1 <= month <= 12, 1 <= day <= 31
// Postcondition: Returns integer corresponding to astrological sign for
// given month and day starting with Capricorn = 1.
int main()
{
using namespace std;
int month;
int day;
//
// Get birth month and day.
//
month = getMonth();
day = getDay();
//
// Determine and print the user's sign
//
cout << "Your sign is ";
// --------------------------------
// ----- ENTER YOUR CODE HERE -----
// --------------------------------
switch (month)
{
case 1:
if (day <= 19)
cout << "Capricorn.";
else
cout <<"Aquarius.";
break;
case 2:
if (day <= 18)
cout << "Aquarius.";
else
cout <<"Pisces.";
break;
case 3:
if (day <= 20)
cout << "Pisces.";
else
cout <<"Aries.";
break;
case 4:
if (day <= 19)
cout << "Pisces.";
else
cout <<"Taurus.";
break;
case 5:
if (day <= 20)
cout << "Taurus.";
else
cout <<"Gemini.";
break;
case 6:
if (day <= 20)
cout << "Gemini.";
else
cout <<"Cancer.";
break;
case 7:
if (day <= 22)
cout << "Cancer.";
else
cout <<"Leo.";
break;
case 8:
if (day <= 22)
cout << "Leo.";
else
cout <<"Virgo.";
break;
case 9:
if (day <= 22)
cout << "Virgo.";
else
cout <<"Libra.";
break;
case 10:
if (day <= 22)
cout << "Libra.";
else
cout <<"Scorpio.";
break;
case 11:
if (day <= 21)
cout << "Scorpio.";
else
cout <<"Sagittarius.";
break;
case 12:
if (day <= 21)
cout << "Sagittarius.";
else
cout <<"Capricorn.";
break;
}
// --------------------------------
// --------- END USER CODE --------
// --------------------------------
cout << endl;
}
int getMonth()
{
using namespace std;
int month;
cout << "Enter the month of your birthday (1-12): ";
cin >> month;
while ((month < 1) || (month > 12))
{
cout << "Month must be between 1 and 12; please re-enter: ";
cin >> month;
}
return month;
}
int getDay()
{
using namespace std;
int day;
cout << "Enter the day of your birthday (1-31): ";
cin >> day;
while ((day < 0) || (day > 31))
{
cout << "Day must be between 1 and 31; please re-enter: ";
cin >> day;
}
return day;
}
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