//ex2_06.cpp
//demonstrating variable scope
#include<iostream>

using namespace std;

int count1 = 100; //Global version fo count1

int main()
{ //function scope begins here
int count1 = 10;
int count3 = 50;
cout << endl
<< "Value of outer count1 = " << count1
<< endl;
cout << "Value of global count1 = " << ::count1 //From outer block
<< endl;

{ //new scope starte here...
int count1 = 20; //This hides the outer count1
int count2 = 30;

cout << "Value of inner count1 = " << count1
<< endl;
cout << "Value of global count1 = " << ::count1 //From outer block
<< endl;


count1 += 3; //This affects the inner count1
count3 += count2;
} //...and ends here

cout << "Value of outer count1 = " << count1
<< endl
<< "Value of outer count3 = " << count3
<< endl;

//cout << count2 << endl; //uncomment to get an error

return 0;
} //Function scope ends here

int count1 = 10
int count3 = 50;

{  // New scope

   // Declare a variable called count1 (this means that when referring
   // to count1 the count1 referred to is the one in this scope, and the
   // one in the outer scope is ignored
   int count1 = 20;
   
   // Because no new variable, count3 has been declared here, count3
   // from the outer scope is referred to

   count3 += count1;
} // Close scope