Explain the difference in the call statement when passing an object’s address (explicitly) versus a reference to function. How are the object’s functions accessed in the called function?
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As with any pointer and reference passing, the pointer call by reference uses the & operator with the object in the call statement. The reference call uses the object name. In the pointer function, we have to use the pointer to the object -> operator to access the public functions. In the reference function, we use the reference object and dot operator. See the Kitty example in the chapter for further reference.
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