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Actually, few C programmers would write (*tptr).price to access
the value of the price structure variable. Instead, most would take
advantage of the
structure-pointer operator,
->, which you can think of as a shorthand that takes the place of
both the dereferencing operator and the structure-member operator.
The following, therefore, are equivalent:
Equivalent
(*tptr).price <----------> tptr -> price
Thus, the structure-pointer operator takes the place of two other operators and eliminates the need for precedence-defeating parentheses:
double trade_price (struct trade *tptr) {
return (tptr -> price) * (tptr -> shares);
}