#include <iostream.h>

int main(int argc, char *argv[])
{
   {  int x;

      x = 3;  				// No error
      cout << "x = " << x << "\n";	// No error
   } 

   x = 1111;  				// Error: x undefined
   cout << "x = " << x << "\n"; 	// Error: x undefined
}