c++ programming questions: Why is the prefix form of + + operator is more effici
ID: 3787607 • Letter: C
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c++ programming questions:
Why is the prefix form of + + operator is more efficient than the postfix form for user-defined classes? What is this? What is * this? True or false: You can define new operators by overloading symbols that are not already operators in C++ True or false: You cannot change the standard precedence of a C++ operator when overloading it. True or false: Overloaded relational operators (, > =)always require one function argument. (Remember, it can be overloaded as a class member function or global function). True or false: Compiler will generate a default constructor if no constructor is defined explicitly.Explanation / Answer
Answer for 10: The prefix function works by incrementing a value first and then returns the result. The postfix function will first store a copy of the value increments it and then returns the newly stored value. Hence prefix function is efficient than postfix function.
Answer for 11: Every object in C++ has a reference to its address using this. It contains value of the object address on which the member function is called.
We can use that within the body of a non-static member function or within default member initializer.
Answer for 12: *this is deferenced pointer that contains the clone of the object on which the member function is called.
Answer for 13: False. we cannot create new operators by overloading symbols.
Answer for 14: True. we cannot change the standard precedence of a c++ operator when overloading it.
Answer for 15: False
Answer for 16: True
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