Increment and Decrement Operator In C++

/*
Increment and Decrement Operator
===============================
++ - Increment Operator
-- - Decrement Operator

++a - Pre Increment
a++ - Post Increment

--a - Pre Decrement
a-- - Post Decrement

*/

#include<iostream.h>
#include<conio.h>
main()
{
int a=10,b;
clrscr();

b=a++;

cout<<"\n B value is "<<b;
cout<<"\n A value is "<<a;

b=++a;

cout<<"\n B value is "<<b;
cout<<"\n A value is "<<a;

b=a--;

cout<<"\n B value is "<<b;
cout<<"\n A value is "<<a;

b=--a;

cout<<"\n B value is "<<b;
cout<<"\n A value is "<<a;

getch();
}