2956261
Descrição
Quiz por roxar.ndc2015, atualizado more than 1 year ago
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Criado por roxar.ndc2015
aproximadamente 9 anos atrás
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Questão 1
Questão
What is true about a Smart Pointers in C++?
Responda
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There's an implementation available as part of the C++ standard library
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The objects they point to are automatically deleted by the garbage collector
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They are used to help ensure that programs are free of memory and resource leaks and are exception-safe
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It was invented by John Smart
Questão 2
Questão
What is the order that objects in an array are destroyed in C++? MyClass objs[10];
Responda
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The order is undefined
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Objects will be destroyed in the same order as they were created
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The order of destruction is the reverse of the order of construction
Questão 3
Questão
You were given a chunk of memory and constructed a new object in that chunk using placement new. What do you do to destroy that object again?
Responda
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The destructor will be called automatically when the chunk of memory is freed
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Placement new doesn’t require destruction of constructed objects
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I will manually invoke the destructor of the object
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A call to placement delete is necessary to destroy the object
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