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Question
Q3[C++11]: Which of the following statements about a unique_ptr object is true?a. A unique_ptr is a "smart pointer" for managing dynamically allocated memory.
b. When a unique_ptr goes out of scope, its destructor automatically returns the managed memory to the free store.
c. You must explicitly delete the memory that's managed by a unique_ptr before the object goes out of scope.
d. All of the above.
Answer
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Related questions
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c. "oct" or "hex" will be displayed in the output stream.
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b. Stream-extraction operator (>>).
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Q1: Which C++ data type was designed to store Unicode characters?
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Q1: Select the correct statement regarding C++ I/O streams:
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virtual double earnings() const = 0;
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c. Any concrete class derived from this class will have an earnings function.
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Q4[C++11]: Which of the following statements is true?a. In C++11, all classes can be used as base classes.b. In C++11, only classes that are not declared as final can be used as base classes.c. In C++11, only classes that are declared as base can be used as base classes.d. None of the above
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Q2: Which of the following is true about using inheritance in software engineering?
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using BaseClass::BaseClass;
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Q4: y and z are user-defined objects and the += operator is an overloaded member function. The operator is overloaded such that y += z adds z and y, then stores the result in y. Which of the following expressions is always equivalent to y += z?a. y = y operator+= zb. y.operator+=(z)c. y = y + zd. y operator+=(y + z)
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Q1: Which of the following is false?
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Q1: A function template can be overloaded by:
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b. Must have return type T.
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d. Do not need a separate template< typename type >statement.