What would be the appropriate function header/prototype for the overloaded addition operator defined as a non-member of a class Exam. a. Exam* operator+(Exam e1, Exam e2); b. Exam Exam::operator+(Exam e1, Exam e2); c. Exam operator+(Exam e1, Exam e2); d. Exam operator+(const Exam& e1, const Exam& e2);

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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C++ Multiple Choice:

  1. What would be the appropriate function header/prototype for the overloaded addition operator defined as a non-member of a class Exam.

    a. Exam* operator+(Exam e1, Exam e2);
    b. Exam Exam::operator+(Exam e1, Exam e2);
    c. Exam operator+(Exam e1, Exam e2);
    d. Exam operator+(const Exam& e1, const Exam& e2);

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