main()
{
	int x=5;
	int y=0;

	printf("y=  %d  \n", y);

	y= times_ten(x);

	printf("y = %d  \n", y);
	
	y= times_ten(y);

	printf("y = %d  \n", y);
}

int times_ten(int x)
{
	return(x * 10);
}