#include <iostream>
using namespace std;

void one(void) 
{
   int a = 10;
   cout << " a = " << a << endl;
}

void two (void) 
{
   int a = 0;
   one( );
   cout << " a = " << a << endl;
}	
					
int main (void) 
{
   int a = 20;
   two( );
}