13.6 Shortcuts

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So far you have used only function prototypes in the classes you've created. It is possible to define the body of the function inside the class itself. Consider the following code:

 class stack {     public:         // .... rest of class         // Push an item on the stack         void push(const int item); }; inline void stack::push(const int item) {     data[count] = item;     ++count; } 

This code can instead be written as:

 class stack {     public:         // .... rest of class         // Push an item on the stack         void push(const int item) {             data[count] = item;             ++count;         } }; 

The inline directive is not required in the second case since all functions declared inside a class are automatically declared inline.

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