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

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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)
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