func	power	int	
	vp	a	int	
	mul	a	a	t_t0
	return	t_t0		
	end	power		
start				
	func	main		
	var	d	0	
	:=	d	4	
	pv	d		
	call	power		
	:=	t_t1	power	
	:=	d	t_t1	
	write	d	express	
	end	main