//
// Filename:      pgm3_4c.cpp
//
// Description:   Demo program, Scope #3, Static
//
// ENSC 104:      Digital Computer Programming
//
// Instructor:    Dr. Walsh
//
// Section:       2
//
// Date Created:  03/17/98
// Last Modified: 03/17/98
//
// Name:          N/A
//

#include <iostream.h>

void sub0( void );
void sub1( void );
void sub2( void );

int x = 1;      // global variable, it can be seen in other files.
static int y = -1; // global to this file, can NOT be seen in other files.

main()
   {
   cout << "X = " << x << ", Y = " << y << endl;
   int x = 5;   // local variable to main
   cout << "X = " << x << ", Y = " << y << endl;

      { // Block A
      int x = 10;
      cout << "X = " << x << ", Y = " << y << endl;
      } // End Block A

   sub0();
   sub0();
   sub0();

   cout << endl;
   
   sub1();
   sub1();
   sub1();

   cout << endl;

   sub2();
   sub2();
   sub2();

   return 0;
   }

void sub0( void )
   {
   static int x = 25;

   cout << "sub0(): X = " << x << ", Y = " << y << endl;

   ++x;

   cout << "sub0(): X = " << x << ", Y = " << y << endl;
   }

void sub1( void )
   {
    static int x = 50;
   cout << "sub1(): X = " << x << ", Y = " << y << endl;
    ++x;
   cout << "sub1(): X = " << x << ", Y = " << y << endl;
   }

void sub2( void )
   {
   static int y = 100;

   cout << "sub2(): X = " << x << ", Y = " << y << endl;
   y++;
   x *= 10;
   cout << "sub2(): X = " << x << ", Y = " << y << endl;

   }