VC++ Exception Handling

[sathiyamurthy]

Hi all

I am working in VC++ domain. i need one help regarding vc++ exception handling. how to use exception handling in vc++? how to get the error message? how to avoid the runtime error. i used some exception in vc++ but in that i cant get the error message...

help me..
Regards
Sam

[sicarie]

I can't give you one with authority - I don't use VC++, but check these out:

http://www.google.com/search?hl=en&q...=Google+Search

[weaknessforcats]

You use the standard try/catch/throw of C++.

Do you have a code sample?

[sathiyamurthy]

You use the standard try/catch/throw of C++.

Do you have a code sample?

try{
int a=10;
int b;
b=a/0;
}
catch(CExceptio n* e)
{
some codes
}

here i want to catch the error.. but i cant get it...
if you know help me

[weaknessforcats]

I don't believe a/0 throws an exception. You need to call a function and have that function throw the exception you want to catch.

Your code should look like this:

try{
int a=10;
int b;
b =     MyFunction(a,0);
}
catch(CException* e)
{
some codes
}
 
//Where:
 
int MyFunction(int first, int second)
{
    if (second == 0) throw new CException;
 
    return  first/ second;
}
 

[sathiyamurthy]

Thanks for your reply,

i worked with your code. but in that i am not getting any messages.
i used GETErrorMessage () and ReportError() function.
i cant get it. help me...

And also i dont know how to use exception like CMemoryExceptio n,
waiting for your valuable reply.

[weaknessforcats]

OK, I put this in _tmain():

 int result = ATest(5,0);
 
    cout << "Result is: " << result << endl;
 

The ATest function looks like my cocd from my last reply except I have got it to compile and execute:

int ATest(int a, int b)
{
   try
   {
     int* pb = &b;
     *pb =    MyFunction(a,b);
    }
    catch(CException* e)
    {
        cout << "Exception!!" << endl;
        return 0;
    }
    return b;
}
 
 
 
int MyFunction(int first, int second)
{
    if (second == 0) throw new CMemoryException;
 
    return  first/ second;
}
 
 

So, a call is made to ATest(). ATest trys MyFunction() passing in the two integers. If the second interge id 0, MyFunction() throws a MemoryException .

A CMemoryExceptio n IS-A CException. Therefore, it is caught using a CException pointer.

Try this code yourself with different values used in ther ATest() call in _tmain().