C struct, typedef, enum & union - Tenouk C & C++

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STRUCT, TYPEDEF, ENUM & UNIONStructure, Function and Pointers• Passing and returning structures to functionsmay not be efficient, particularly if the structureis large.• We can eliminate this excessive datamovement and computer resources usage bypassing pointers to the structures to thefunction, and access them indirectly through thepointers.• The following example is a modified version ofour previous program which uses pointersinstead of passing entire structures.www.tenouk.com, © 36/93
STRUCT, TYPEDEF, ENUM & UNION• Structure, function and pointers example (using * operator)• The code is very similar previous example, but we have changed theprototypes and functions to work with pointers.• The argument of readpart() function is a pointer to the inventorystructure.• While items variable declared in main() is inventory structuretype.• The function accesses the object pointed to by pPartPtr, and usesthe dot operator to access a member of that object.www.tenouk.com, © 37/93
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C struct, typedef, enum & union - Tenouk C & C++

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