Yurttas/PL/OOL/Cplusplus/F/02/03/01/block 02.cpp

 1/*
 2   Copyright(C) 1998
 3   All Rights Reserved. Salih Yurttas, ZCubes, BitsOfCode Software Systems, Inc..
 4
 5   Permission to use, copy, modify, and distribute this
 6   software and its documentation for EDUCATIONAL purposes
 7   and without fee is hereby granted provided that this
 8   copyright notice appears in all copies.
 9 
10   date   : January 1, 1998.
11   author : Salih Yurttas.
12
13   block_00.cpp
14*/
15
16
17#include <iostream>
18
19using namespace std;
20
21int a = 2;
22
23int main(int argc, char* argv[]) {
24
25  int a = 4;
26
27  cout << "inner a = " << a << ", global a = " << ::a << endl;
28
29  --a;
30
31  cout << "a = " << a << endl;
32  cout << endl;
33
34  {
35    int a = 8;
36
37    cout << "inner a = " << a << ", global a = " << ::a << endl;
38
39    ++a;
40    ++::a;
41
42    cout << "inner a = " << a << ", global a = " << ::a << endl;
43    cout << endl;
44  }
45
46  cout << "inner a = " << a << ", global a = " << ::a << endl;
47  cout << endl;
48
49}