C / C++ / MFC

class A
{
   ...
};

class B
{
public:
    // I think you'd get complained at if both of these were used
    B ( A &a );   // would pop up the error if it was enabled.
    B ( const A &a); // would not pop up the error
    ....
};

void MyFunction (CBigClass &big)
{
    COtherClass other;

    other = big;

    other.DoStuff ();
}

CBigClass b;
b.Blah ();

MyFunction (b); // I've looked through this - I can't see anything bad there!
                // This function just takes a copy of big, and then works on the
                // copy. What could possibly go wrong?

class COtherClass
{
   ....
   COtherClass &operator=(CBigClass &b);
   ....
};

COtherClass &COtherClass::operator=(CBigClass b)
{
   ....
   b.DoSomethingNotConst ();
   ....
   return *this;
}

Iain Clarke wrote:

Suddenly, you have a bug that doesn't manifest until much later, and would be really hard to track down.

Class C a,b;

b.FillWithValues ();

a = b;

Kogee San wrote:

it generates more than 100 error which particularly made the compiler to stop compiling due to error exceeds 100. all of the errors come from the Wininet.h header file.

Kogee San wrote:

Why do we need to add windows.h.