C / C++ / MFC

const Point2d p1(2,3);
Point2d p2(4,5);

p1.setCoords(3,2);   // Compiler error. setCoords not declared as const method
p2.setCoords(5,4);   // OK

double n = p1.norm(); // OK - norm declared as const method

Ratul Thakur wrote:

i'm not able to figure out where are X and Y defined

Member 9411471 wrote:

It will not compile using msvc++ 2015

CString weekday[] = {CString ("Sun"), CString( "Mon")...};

Quote:

but it uses system generated default constructors, without parameters of course

Quote:

My goal is to create an instance of the top class with parameters passed to the hierarchy lower chain classes.
Do I make sense?

class A
{
public : 

    A( int p ) : a( p )
    {
    }

protected:
    int a;
};

class B
{
public:

    B( int q ) : b( q )
    {
    }

protected:
    int b;
};

class C : public A, B
{
public : 

    C( int x, int y, int z ) : A( x ), B( y), c( z )
    {
        a = x; // also possible
    }

private:

    int c;
};

int _tmain(int argc, _TCHAR* argv[])
{
    C test( 1, 2, 3 );

	return 0;
}

class TestClass {
public:
	TestClass(const string& InitText) { text = InitText; };
	string text;
};