Write C++ program illustrates the use of increment and decrement operators.

#include <iostream.h> 
 #include<conio.h>; 
 void main() 
 { 
              int a=1, b=5; 
              clrscr(); 
              cout<<"\nvalue of a"; 
              cout<< "\nBefore PostIncrement = "<<a; 
              a++; 
              cout<<"\nvalue of a"; 
              cout<< "\nAfter PostIncrement = "<<a; 
              a--; 
               cout<<"\nValue of a"; 
              cout<< "\nAfter Post Decrement = "<<a; 
               cout<<"\nValue of b"; 
               cout<< "\nBefore Pre Increment = "<<b; 
               ++b; 
               cout<<"\nValue of b"; 
               cout<< "\nAfter Pre Increment = "<<b; 
                --b; 
               cout<<"\nValue of b"; 
               cout<<"\nAfter Pre Decrement = "<<b; 
               cout<<"\n"; 
               getch(); 
 }