#include <iostream>
using namespace std;

int main()  
{  
   {
      int   x = 2;     
      int   y = x++;     
      cout << x << y  << endl ;     
   }
   {
     int  x = 2 ;      
     int  y = ++x ; 
     cout << x << y   << endl ;
   }
   {
       int x = 2 ;    
       int y = 4 ;      
        cout << x++ << --y   << endl ;    
   }
   {
     int  x = 2  ;       
     int  y = 2 * x++  ;
     cout << x << y  << endl  ;
   }
   {
      int  x = 99;     
      if (x++ < 100)          
        cout << "It is true!\n"  << endl ;
      else     
        cout << "It is false!\n"  << endl ;     
    }
    {
       int  x = 0 ;       
       if (++x)        
           cout << "It is true!\n"  << endl ;  
       else    
           cout << "It is false!\n"  << endl ;         

    }

}