what abstraction and encapsulation is through example?

class eg
{

int rn;
char n[20];
//by default memebers of the class are private
public:

void getd()
{

}


void dispd()
{
}
};

//encapsulation wrapping or binding up of data and functions into a single unit called class so classes are used to encapsulate data and functions.

hide the information to outside world from direct use..

Abstraction is hiding internal implementation details ,just hilights the set of services to the outside world.for example..
University hides student information(like name,sex) to the examiner.but hiligthing the service as putMarks()..

class HallTicket

{
private:
char *name;
char *sex;
public:
void putMarks(){}
};
so examiner don't have any knowledge about name and sex etc..but he can put the marks by putMarks() service through the HallTicket object.

Encapsulation
holding the data behind the methods is called encapsulation..

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More Useful Topics...

 

History Of C..

In the beginning was Charles Babbage and his Analytical Engine, a machine
he built in 1822 that could be programmed to carry out different computations.
Move forward more than 100 years, where the U.S. government in
1942 used concepts from Babbage’s engine to create the ENIAC, the first
modern computer.
Meanwhile, over at the AT&T Bell Labs, in 1972 Dennis Ritchie was working
with two languages: B (for Bell) and BCPL (Basic Combined Programming
Language). Inspired by Pascal, Mr. Ritchie developed the C programming
language.

My 1st Program...


#include
#include
void main ()
{
clrscr ();
printf ("\n\n\n\n");
printf ("\t\t\t*******Pankaj *******\n");
printf ("\t\t\t********************************\n");
printf ("\t\t\t\"Life is Good...\"\n");
printf ("\t\t\t********************************");
getch ();
}

Next Step...


#include
#include

void main ()
{
clrscr ();
printf ("\n\n\n\n\n\n\n\n");
printf ("\t\t\t --------------------------- \n\n");

printf ("\t\t\t | IGCT, Info Computers, INDIA | \n\n");
printf ("\t\t\t --------------------------- ");

getch ();

}

Hits!!!