page 48
#include<iostream>
using namespace std			;

class part
{
int i						;
char s					;
}						;

int main()
{

part part1 				;

part1.i = 2				;
part1.s = 'A'				;

cout << part1.i << endl		;
cout << part1.s << endl		;

return 0					;
}

page 50
#include<iostream>
using namespace std			;

class part
{

int i						;
char s					;

public:
void setdata(int j)
{ i = j					;}

}						;

int main()
{
part p1 					;
p1.setdata(4)				;

return 0					;
}

page 51
#include<iostream>
using namespace std			;

class part
{
private:
int i						;
char s					;

public:
void setdata(int j)
{ i = j					;}
int getdata()
{return i					;}

}						;

int main()
{
part p1 					;
p1.setdata(4)				;
cout << p1.getdata() << endl	;
return 0					;
}

page 52
#include<iostream>
using namespace std		   ;

class part
{
private:
int i					   ;
char s				   ;

public:
part() : i(4)
{ 					    }					
int getdata()
{return i	  ;}

}		   ;  // end of the class

int main()

{
part p1	 			   ;	      
cout << p1.getdata() << endl  ;
return 0				   ;
}

page 53
#include<iostream>
using namespace std			;

class part
{

int i						;
char s					;

public:

part() : i(4)
{ 						;}

part(int j) : i(j)
{ 						}

int getdata()
{return i					;}
}						;

int main()
{
part p1 					;
part p2(5) 				;

cout << p1.getdata() << endl	;
cout << p2.getdata() << endl	;

return 0					;
}

page 54
#include<iostream>
using namespace std			;

class part
{

int i						;
char s					;

public:

part() : i(4)
{ 						;}

int getdata(void)			;
}						;

int main()
{
part p1 					;

cout << p1.getdata() << endl	;

return 0					;
}

int part::getdata(void)
{return i					;}

#include<iostream>
using namespace std			;
class part
{
int i						;
char s					;
public:
part() : i(4)
{ 						;}
int getdata(void)			;
void mult2(void)		;
}						;
int main()
{
part p1 					;
p1.mult2()					;
cout << p1.getdata() << endl	;
return 0					;
}
void part::mult2(void)
{ i	= i * 2				;}
int part::getdata(void)
{return i					;}



page 55
#include<iostream>
using namespace std	;
class part
{
private:
int i	;	
char s			;
public:
part() : i()
{ 	;}	
part(int j) : i(j)
{ 	 }
int getdata()	;
}	;

int main()
{
part p1(4) 	;
part p2(5) 	;

cout << p1.getdata() << endl	;
cout << p2.getdata() << endl	;

return 0	;
}
int part::getdata(void)
{return i	;}

page 56
#include<iostream>
using namespace std			;
class part
{
private:
int i						;
char s					;
public:
part() : i()
{ 			}
part(int ip) : i(ip)
{ 			 }

int getdata(void)			;

void add(part p)
{ i = i + p.i				;}

}						;

int main()
{

part p1(4) 				;
part p2(5) 				;

p2.add(p1)					;

cout << p1.getdata() << endl	;
cout << p2.getdata() << endl	;

return 0					;
}
int part::getdata(void)
{return i					;}

page 57
#include<iostream>
using namespace std			;
class part
{
private:
int i						;
char s					;
public:
part() : i()
{ 			 ;}
part(int j) : i(j)
{ 		      ;}
int getdata(void);
part add(void)
{i++						;
part p					;
p.i = i					;
return p					;}
}						;
int main()
{
part p1(4) 				;
p2 = p1.add()				;
cout << p1.getdata() << endl;
cout << p2.getdata() << endl;
return 0					;
}
int part::getdata(void)
{return i					;}


page 58
// statdata.cpp
// static class data
#include <iostream>
using namespace std;
////////////////////////////////////////////////////////////////
class foo
   {
   private:
      static int count;   //only one data item for all objects
                          //note: *declaration* only!
   public:
      foo()               //increments count when object created
         { count++; }
      int getcount()      //returns count
         { return count; }
   };
//--------------------------------------------------------------
int foo::count = 0;       //*definition* of count
////////////////////////////////////////////////////////////////
int main()
   {
   foo f1, f2, f3;        //create three objects

   cout << "count is " << f1.getcount() << endl;  //each object
   cout << "count is " << f2.getcount() << endl;  //sees the
   cout << "count is " << f3.getcount() << endl;  //same value
   return 0;
   }