I need answer of three questions 1.Three of the following expressions have the same value. Which of the following expressions has a value different from the others ? Select one: a.ptr b. "8iptr c &*ptr d. ptr   2.Which of the following assignments would be a compilation error? Select one: a. Assigning the address of a derived-class object to a derived-class pointer b. Assigning the address of a derived-class object to a base-class pointer c. Assigning the address of a base-class object to a base-class pointer d. Assigning the address of a base-class object to a derived-class pointer   3.To declare class subClass a privately derived class of superClass one would write Select one: a. class subclass inherits private superClass b. class subclass : private superClass class subclass : superClass d class subclass < private superClass >

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Concept of Pointer Parameter

Pointers are the special variable that stores the variable address, instead of storing the variable value. Pointer is a powerful feature of a programming language. A pointer is mostly used to save memory space and improve execution time.