2956261
Descripción
Test por roxar.ndc2015, actualizado hace más de 1 año
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Creado por roxar.ndc2015
hace más de 9 años
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Pregunta 1
Pregunta
What is true about a Smart Pointers in C++?
Respuesta
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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
Pregunta 2
Pregunta
What is the order that objects in an array are destroyed in C++? MyClass objs[10];
Respuesta
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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
Pregunta 3
Pregunta
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?
Respuesta
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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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