//
// Filename:      pgm3_4b.cpp
//
// Description:   Demo program, Scope #2: Local variables
//
// 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 a( void );
void b( void );
void c( void );

int x = 1;      // global variable

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

      { // Block A
      int x = 7;
      cout << "X = " << x << endl;
      } // Block B

   a();
   b();
   c();

   a();
   b();
   c();

   c();
   c();
   
   cout << "X = " << x << endl;

   return 0;
   }

void a( void )
   {
   int x = 25;  // Local to a, Initialized each time a is called
   cout << "a(): X = " << x << endl;

   x -= 5;

   cout << "a(): X = " << x << endl << endl;
   }

void b( void )
   {
    int x = 50;  // Local to b, initialized each time b is called
    cout << "b(): X = " << x << endl;

    ++x;
    cout << "b(): X = " << x << endl << endl;;
   }

void c( void )
   {
   cout << "c(): X = " << x << endl; // Using the global variable

   x *= 10; // Using the global variable

   cout << "c(): X = " << x << endl << endl; // Using the global variable
   }