#include <iostream>
using namespace std;

int main()
{
   {
      int   x = 2;
      int   y = x++;
      //y is still 2 x is 3
      cout << x << y  << endl ;
   }
   {
     int  x = 2 ;
     int  y = ++x ;
     //x is 3 y is also 3
     cout << x << y   << endl ;
   }
   {
       int x = 2 ;
       int y = 4 ;

       cout << x++ << --y   << endl ;
       //prints out
       //x is 2 y is 3
   }
   {
     int  x = 2  ;
     int  y = 2 * x++  ;
     cout << x << y  << endl  ;
     //prints x is 3 y is 4
   }
   {
      int  x = 99;
      //x is 99 in the expression
      if (x++ < 100)
        //now x is 100
        cout << "It is true!\n"  << endl ;
      else
        cout << "It is false!\n"  << endl ;
    }
    {
       int  x = 0 ;
       //x is 1 in the expression
       if (++x)
           cout << "It is true!\n"  << endl ;
       else
           cout << "It is false!\n"  << endl ;

    }

}