Using the scope resolution operator (2) : block scope variable « Language Basics « C++ Tutorial

1.	Language Basics
2.	Data Types
3.	Operators statements
4.	Array
5.	Development
6.	Exceptions
7.	Function
8.	Structure
9.	Class
10.	Operator Overloading
11.	Pointer
12.	File Stream
13.	template
14.	STL Introduction
15.	string
16.	vector
17.	list
18.	bitset
19.	set multiset
20.	valarray
21.	queue stack
22.	deque
23.	map multimap
24.	STL Algorithms Modifying sequence operations
25.	STL Algorithms Non modifying sequence operations
26.	STL Algorithms Binary search
27.	STL Algorithms Sorting
28.	STL Algorithms Merge
29.	STL Algorithms Min Max
30.	STL Algorithms Iterator
31.	STL Algorithms Heap
32.	STL Algorithms Helper

C / ANSI-C

C Tutorial

C++

Visual C++ .NET

C++ Tutorial » Language Basics » block scope variable

1.6.9.Using the scope resolution operator (2)

#include <iostream>

#include <ostream>



namespace n {

  struct counter {

    static int n;

  };

  double n = 2.8;

}



int n::counter::n = 7; 



int main()

{

  int counter = 0;    

  int n = 10;         



  std::cout << n::counter::n; 

  std::cout << n::n;          

  std::cout << x.n;           

  std::cout << n;             

  std::cout << counter;       

}

Value of outer count1 = 10
Value of global count1 = 100
Value of inner count1 = 20
Value of global count1 = 100
Value of outer count1 = 10
Value of outer count3 = 80

1.6.block scope variable
	1.6.1.	Variable block scope
	1.6.2.	Variables can be local to a block
	1.6.3.	Inner block variable scope
	1.6.4.	Names in inner scopes can hide names in outer scopes.
	1.6.5.	Using the scope resolution operator: '::'
	1.6.6.	global and block scope
	1.6.7.	scope code block
	1.6.8.	global variables across functions
	1.6.9.	Using the scope resolution operator (2)

www.java2java.com | Contact Us

All other trademarks are property of their respective owners.