C++ Logical Operator OR

#include <iostream>
using namespace std;
#include <process.h>             //for exit()
#include <conio.h>               //for getche()
int main()/*from   w w  w .j  a v a2 s .c  o m*/
{
   char dir='a';
   int x=10, y=10;
   while( dir != '\r' )          //quit on Enter key
   {
      cout << "\n\nYour location is " << x << ", " << y;
      if( x<5 || x>15 )          //if x west of 5 OR east of 15
         cout << "\nBeware: dragons lurk here";
      cout << "\nEnter direction (n, s, e, w): ";
      dir = getche();            //get direction
      switch(dir)
      {
         case 'n': y--; break;   //update coordinates
         case 's': y++; break;
         case 'e': x++; break;
         case 'w': x--; break;
      }
   }
   return 0;
}

#include <iostream>
using namespace std;
int main()/*  www .  ja v  a 2 s.com*/
{
   int f, g;
   g = 5;
   f = 8;
   if ((g = 25) || (f = 35))
   {
      cout << "g is " << g << " and f got changed to " << f;
   }
   return 0;
}