// The purpose of this example is to show how scope of a variable is affected
// by the block of code { } where the variable is declared.
// The extra block is shown for illustrative purposes only.  Normally blocks are defined
// for conditional statements, loops, and functions. But this example shows that
// they can be created by themselves.
#include<iostream>
using namespace std;

int main()
{
int a = 5, b = 10;
int x = 15;
	{
		double a = 1.5;
		b = -2;
		int x = 20;
		int y = 25;
		cout << "a = " << a << ", b = " << b << ", x = " << x << ", y = " << y << endl;
	}
cout << "a = " << a << ", b = " << b << ", x = " << x << endl;
system("pause");
}