View Assessment Result: Multiple-Choice Quiz 3
2.
Which of the following is an example of a pure virtual function?
(a) virtual int Compute();
(b) int Compute() { Compute = 0; };
(c) virtual int Compute() { return 0; };
(d) virtual int Compute() = 0;
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.5.2 of the course notes.
(d)
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3.
Inheritance is an important feature of C++ because
(a) it makes type-checking much easier
(b) it can often replace templates
(c) it greatly increases efficiency
(d) it is a powerful code reuse mechanism
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.5.1 of the course notes.
(d)
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4.
Which of the following is true of inheritance?
(a) It causes one type to behave like several types.
(b) It is an important idea in Object Oriented Programming, but currently it is not implemented in C++.
(c) It protects data members from illegal access.
(d) It provides for the elegant construction of a new class from an existing class.
Correct answer is (d)
Your score on this question is: 0.00
Feedback:
See section 1.5.1 of the course notes.
(a)
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5.
In C++ exception handling, intermediate exception handlers typically are used to:
(a) ensure allocated resources are properly released
(b) throw user-defined exception classes
(c) catch exceptions polymorphically
(d) override the guarantees of exception specifications
Correct answer is (a)
Your score on this question is: 0.00
Feedback:
See section 1.5.4, subsection "Using Intermediate Handlers," in the course notes.
(c)
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6.
In C++ exception handling, a try block must be followed by _____ catch block(s).
(a) exactly one
(b) one or more
(c) exactly two
(d) three or fewer
Correct answer is (b)
Your score on this question is: 10.00
Feedback:
See section 1.5.4, subsection "C++ Exception Handling Fundamentals," in the course notes.
(b)
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7.
Which of the following is (are) true about template classes in C++?
Methods cannot be overloaded in templated class definitions.
Private data of a templated class cannot be declared to have the type of the templated parameter.
(a) II only
(b) I only
(c) I and II
(d) None
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.5.3 of the course notes
(d)
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8.
Consider the following definitions of a C++ class.
class Array {
public:
typedef float Item; // <-- change here
Item& operator[](int i) {return arr[i];}
private:
int len; // length of array
Item *arr; // pointer to first elm
};
template<typename T>
class Array {
public:
T& operator[](int i) {return arr[i];}
private:
int len; T *arr; };
The second definition of class Array is _____ versatile than the first _____ efficient at run time when used in a program.
(a) more, but less
(b) more, and equally
(c) less, and equally
(d) less, but less
Correct answer is (b)
Your score on this question is: 0.00
Feedback:
See section 1.5.3 of the course notes.
(a)
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9.
Which of the following is true about compilation of a template function or class?
(a) Compilation takes less time.
(b) Compilation takes much, much longer.
(c) Compilation takes slightly longer.
(d) Templates are not handled during compilation.
Correct answer is (c)
Your score on this question is: 0.00
Feedback:
See section 1.5.3 of the course notes.
(d)
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10.
Consider the following template swap function and data types.
template<typename T> void swap( T& a, T& b ){
T tmp = a; a = b; b = tmp;
}
char c1, c2;
int i1, i2;
float A[10];
Which of the following calls to swap produces a compile time error?
swap( i1, c2 )
swap( c1, i2 );
swap( A[5], A[2] );
(a) I and II
(b) II and III
(c) I only
(d) I, II, and III
Correct answer is (a)
Your score on this question is: 10.00
Feedback:
See section 1.5.3 of the course notes.
(a)
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View Assessment Result: Multiple-Choice Quiz 3
Your performance was as follows:
1.
Which of the following is an example of a pure virtual function?
(a) virtual int Compute();
(b) virtual int Compute() { return 0; };
(c) virtual int Compute() = 0;
(d) int Compute() { Compute = 0; };
Correct answer is (c)
Your score on this question is: 10.00
Feedback:
See section 1.5.2 of the course notes.
(c)
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2.
Polymorphism is a mechanism that is used in order to
(a) build new classes on top of existing ones
(b) determine methods of a class based on its data members
(c) determine the type of an object dynamically at run time
(d) protect data members from illegal access
Correct answer is (c)
Your score on this question is: 10.00
Feedback:
See section 1.5.2 of the course notes.
(c)
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3.
What is composition?
(a) It is the inclusion of one class in another as a data member.
(b) It is an important idea in Object Oriented Programming, but currently it is not implemented in C++.
(c) It is the same as polymorphism.
(d) It is a method to build new classes on top of existing ones.
Correct answer is (a)
Your score on this question is: 0.00
Feedback:
See section 1.5.1 of the course notes.
(b)
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4.
Which of the following is true of inheritance?
(a) It protects data members from illegal access.
(b) It is an important idea in Object Oriented Programming, but currently it is not implemented in C++.
(c) It causes one type to behave like several types.
(d) It provides for the elegant construction of a new class from an existing class.
Correct answer is (d)
Your score on this question is: 10.00
Feedback:
See section 1.5.1 of the course notes.
(d)
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5.
Consider the following C++ program segment:
try {
throw out_of_range("out of range");
cout << "try ";
}
catch (...) {
cout << "catch ";
}
The above program segment will output which of the following character strings?
(a) "try catch "
(b) "catch try "
(c) "catch "
(d) "out of range catch "
Correct answer is (c)
Your score on this question is: 10.00
Feedback:
See section 1.5.4 in the course notes.
(c)
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ssd5.rar （44个子文件） 
自做 Optional Exercise 4 Optional Exercise 1 
EnhancedLinkedList.h 2KB Recommended Exercise 1 Date.h 817B Homework.cpp 987B Date.cpp 1KB Homeworklist.h 891B Homework.h 1KB Homeworklist.cpp 1KB exam1 
选择1.txt 10KB 选择2.txt 4KB handout-files safearray.h 980B enhancedsafearray.h 2KB main.cpp 3KB 选择3.txt 18KB Recommended Exercise 4 car.cpp 1KB main.cpp 499B 1.txt 491B car.h 332B exam2 main.cpp 3KB Optional Exercise 5 selectionsort.cpp 2KB quicksort.cpp 3KB Optional Exercise 6 parts.h 2KB Optional Exercise 2 fifo.h 128B fifo.cpp 1KB Recommended Exercise 3 courses.txt 4KB safearray.h 839B safearraytester.cpp 1KB main.cpp 1KB course.h 954B exercise4 Listing.cpp 1KB Recommended Exercise 2 errors.txt 591B wordlist.cpp 2KB words.txt 216B exercise2 Listing.cpp 414B Group.cpp 390B Optional Exercise 3 grid.h 765B sample.txt 72B main.cpp 669B grid.cpp 2KB exercise1 Client.cpp 1KB Date.cpp 3KB main.cpp 3KB Advertisement.cpp 2KB exercise3 Category.cpp 2KB Categories.cpp 410B资源评论
