Once you have created a trade
object by defining a variable of the
trade
type, you can refer to that trade
object's own
price
and number
structure variables. To refer to a
structure variable, you join the name of the trade
variable, via the
structure-member operator, a period, to the name of the structure
variable in which you are interested. Thus, t.price
produces the
value of the price
structure variable of the trade
object
named
t
.
Once you know how to refer to a trade
object's structure variables,
you are free to assign values to those structure variables and,
subsequently, to retrieve those values.