C / C++ / MFC

void projectFrom(Point3D p3d) { i = p3d.i; j = p3d.j; }

void projectFrom(Point3D p3d); // don't do this: { i = p3d.i; j = p3d.j; } 

#include "stdafx.h"

class Point3D; // Forward Declaration of class Point3D defined below.

class Point2D
{
public:
    int i, j;
    Point2D()                { Set( 0, 0 ); }
    Point2D(int a, int b)    { Set( a, b ); }
    void Set( int a, int b ) { i = a; j = b; }
    __inline void projectFrom(Point3D *p3d);
};

class Point3D
{
public:
    int i, j, k;
    Point3D()                              { Set( 0, 0, 0 ); }
    Point3D(int a, int b, int c)           { Set( a, b, c ); }
    Point3D& operator=(const Point2D& p2d) { Set( p2d.i, p2d.j, 0 ); }
    void Set(int a, int b, int c)          { i = a; j = b; k = c; }
};


void Point2D::projectFrom(Point3D *p3d)
{
    i = p3d->i;
    j = p3d->j;
}


////////////////////////////////////////////////////


int main()
{
    Point2D p2d(1,2);
    Point3D p3d(2,3,4);
    p2d.projectFrom( &p3d );
    fprintf( stdout, "p2d = (%d, %d)\n", p2d.i, p2d.j );
    return 0;
}

<br />
{i = p3d.i; j = p3d.j; } 

LONGLONG value = 12345;
TCHAR mystring[sizeof(LONGLONG)*8 + 1];
for(int i = 0; i < sizeof(LONGLONG)*8; i++)
	mystring[i] = ((value >> (sizeof(LONGLONG)*8 - i - 1)) & 1) ? _T('1') : _T('0');
mystring[sizeof(LONGLONG)*8] = 0;

mystring[i] = '\0';