// purpose: test Calculator implementation for correctness

import java.util.*;

public class CalculatorTester {
	
	// main(): testing starting point
	public static void main( String[] args ) {

		Scanner stdin = new Scanner( System.in );
		System.out.print( "Start value for calculator: " );
		int startValue = stdin.nextInt();

		Calculator c = new Calculator();
		Calculator d = new Calculator( startValue );

		System.out.println( "c: " + c.value() );
		System.out.println( "d: " + d.value() );

		c.add( 10 );
		d.add( 12 );
		System.out.println( "added 10 to c: " + c );
		System.out.println( "added 12 to d: " + d );	
	}
}