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CSC 102 Exam 2 |Questions with 100% Correct Answers
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CSC 102 Exam 2 |Questions with 100% CorrectAnswers
if an object containing a pointer pointing to a dynamically allocated array goes out of scope,
that array is deleted automatically. t/f - ✔️✔️no.. this is a memory leak
fix this - ✔️✔️ptrMemberVarType::~ptrMemberVarType()
{
delete [] p;
}
copy constructor is defined by __ and the two objects in question are of the ___ - ✔️✔️the
compiler... same type.
copy constructor automatically executes in three situations - ✔️✔️-when an object is declared
and initialized by using the value of another object
-when, as a parameter, an object is passed by value
-when the return value of a function is an object.
initialization due to the copy constructor is called __ and list its syntax - ✔️✔️default member-
wise initialization.
ptrMemberVarType objectTwo(objectOne);
the default initialization of the copy constructor leads to __ copy - ✔️✔️shallow
fix this to be deep syntax - ✔️✔️properly define the copy constructor
, className(const className& otherObject);
3 things normally done for classes with pointer member variables - ✔️✔️-include the destructor
in the class
-overload the assignment operator for the class
-include the copy constructor
can you pass an object of a derived class to a formal parameter of the base class? - ✔️✔️yes
static binding - ✔️✔️necessary code to call a specific function generated by the compiler... static
or early binding
dynamic binding - ✔️✔️compiler does not generate code to call a specific function; it generates
information to enable run-time system to generate specific code for the function call. (aka late
binding)
virtual functions have __ binding - ✔️✔️binding occurs at program execution time, not at compile
time.... dynamic
regardless of whether the object is passed by ref or val, if a derived class object is passed to a
formal parameter of the base class type, the destructor of __ executes - ✔️✔️the base class
solution: - ✔️✔️use a virtual destructor in the base class
the virtual destructor of a base class automatically makes the destructor of a ___ class __ -
✔️✔️derived... virtual
after executing the destructor of the derived class.. - ✔️✔️the destructor of the base class
executes
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