Problem Solving with Computers
Exam Solutions
Course Introduction
Problem Solving with Computers introduces students to the fundamental concepts and techniques required to tackle real-world problems using computational methods. The course covers key topics such as algorithm development, flowcharting, and the basics of programming languages, emphasizing logical thinking and systematic approaches to breaking down complex challenges. Students will learn to design, implement, and test simple computer programs, gaining practical skills in debugging and optimizing solutions. Through hands-on projects and exercises, the course aims to develop critical thinking, creativity, and a solid understanding of how computers can be utilized effectively to solve a variety of problems across disciplines.
Recommended Textbook
Starting Out with C++ from Control Structures to Objects 9th Edition by Tony Gaddis
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21 Chapters
949 Verified Questions
949 Flashcards
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2
Chapter 1: Introduction to Computers and Programming
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Sample Questions
Q1) Programs are often referred to as hardware.
A)True
B)False Answer: False
Q2) In programming, the terms "line" and "statement" always mean the same thing.
A)True
B)False Answer: False
Q3) The first step in writing a program is to
A) type the code
B) visualize the program running on a computer
C) visualize logical errors
D) clearly define what the program is to do
E) None of these
Answer: D
Q4) Pseudocode is a form of a program statement that will always evaluate to "False."
A)True
B)False Answer: False
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Chapter 2: Introduction to C
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Sample Questions
Q1) What will the following code display?
Cout << "Roses " << "are red";
Cout << "and " << "violets/n"
Cout << "are" << "blue" << endl;
A) Roses are red And violets
Are blue
B) Roses are red and violets/nare blue
C) Roses are redand violets/nareblue
D) Roses are red and violets/n are blue
Answer: C
Q2) C++ 11 introduced an alternative way to define variables, using the template key word and an initialization value.
A)True
B)False
Answer: False
Q3) A value is stored in a variable with an assignment statement. A)True
B)False
Answer: True
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Chapter 3: Expressions and Interactivity
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Sample Questions
Q1) What is the value of number after the following statements execute?
Int number = 10;
Number += 5;
Number -= 2;
Number *= 3;
A) 3
B) 30
C) 39
D) 2
E) None of these
Answer: C
Q2) The only difference between the get function and the >> operator is that get reads the first character typed, even if it is a space, tab, or the [Enter] key.
A)True
B)False
Answer: True
Q3) The fixed manipulator causes a number to be displayed in scientific notation.
A)True
B)False
Answer: False
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Chapter 4: Making Decisions
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Sample Questions
Q1) As a rule of style, when writing an if statement you should indent the conditionally-executed statements.
A)True
B)False
Q2) The default section of a switch statement performs a similar task similar to the __________ portion of an if/else if statement.
A) conditional
B) break
C) trailing else
D) All of these
E) None of these
Q3) Relational operators allow you to __________ numbers.
A) add
B) multiply
C) compare
D) average
E) None of these
Q4) The default section is required in a switch statement.
A)True
B)False
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Chapter 5: Loops and Files
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Sample Questions
Q1) A file must be __________ before data can be written to or read from it.
A) opened
B) closed
C) named
D) buffered
E) initialized
Q2) What will the following code display? int number = 6; ++number;
cout << number << endl;
A) 6
B) 5
C) 7
D) 0
Q3) A special value that marks the end of a list of values is a A) constant
B) counter
C) variable
D) sentinel
E) None of these
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Chapter 6: Functions
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Sample Questions
Q1) Select all that apply. Which of the following must be included in a function header?
A) the data type of each parameter
B) the data type of the return value
C) the name of the function
D) the names of parameter variables
Q2) The value in a __________ variable persists between function calls.
A) dynamic
B) global
C) floating-point
D) static local
E) counter
Q3) A parameter is a special purpose variable that is declared inside the parentheses of a function definition.
A)True
B)False
Q4) It is possible for a function to have some parameters with default arguments and some without.
A)True
B)False
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Chapter 7: Arrays and Vectors
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Sample Questions
Q1) C++ limits the number of array dimensions to two.
A)True
B)False
Q2) Assume array1 and array2 are the names of two arrays. To assign the contents of array2 to array1, you would use the following statement: array1 = array2;
A)True
B)False
Q3) This vector function returns the number of elements in a vector.
A) size
B) num_elements
C) elements
D) length
Q4) Which of the following is a valid C++ array definition?
A) int array[0];
B) float $payments[10.23];
C) int numbers[5.6];
D) int scores[25];
E) None of these
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Chapter 8: Searching and Sorting Arrays
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Sample Questions
Q1) A __________ search is more efficient than a __________ search.
A) character, string
B) integer, double
C) binary, linear
D) linear, binary
E) None of these
Q2) Using a linear search to find a value that is stored in the last element of an array that contains 20,000 elements, __________ elements must be compared.
A) 20,000
B) only the first two
C) only half
D) 2,000
E) None of these
Q3) Data that is to be sorted in ascending order is ordered
A) from lowest value to highest value
B) from highest value to lowest value
C) with a binary search algorithm
D) by identifying the middle value and going up and down from there
E) None of these
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Page 10
Chapter 9: Pointers
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Sample Questions
Q1) In C++11 you can use smart pointers to dynamically allocate memory and not worry about deleting the memory when you are finished using it.
A)True
B)False
Q2) What will the following code output?
Int number = 22;
Int *var = &number;
Cout << var << endl;
A) the address of number
B) 22
C) an asterisk followed by 22
D) an asterisk followed by the address of number
Q3) A pointer can be used as a function argument, giving the function access to the original argument.
A)True
B)False
Q4) The ampersand (&) is used to dereference a pointer variable in C++.
A)True
B)False
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Chapter 10: Characters, C-Strings, and More About the String Class
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Sample Questions
Q1) The arguments of the strcpy function are
A) two C-strings
B) two addresses
C) three pointers
D) one array and one pointer
E) None of these
Q2) You may use the <, >, <=, >=, ==, and != relational operators to compare string objects.
A)True
B)False
Q3) The null terminator stands for ASCII code
A) 57
B) 100
C) 1000
D) 0
E) None of these
Q4) The itoa function is similar to atoi but it works in reverse.
A)True
B)False
Page 12
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Chapter 11: Structured Data
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Sample Questions
Q1) A function __________ return a structure.
A) may
B) may not
C) will always
D) can never
E) None of these
Q2) A struct can contain members with varying data types.
A)True
B)False
Q3) Given the following structure decaration, idNum is struct Employee { String name; Int idNum; };
A) a member
B) an array
C) a tag
D) None of these
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Chapter 12: Advanced File Operations
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38 Flashcards
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Sample Questions
Q1) To write to a file, you use the file_write function.
A)True
B)False
Q2) The setprecision manipulator cannot be used to format data written to a file.
A)True
B)False
Q3) When data is read from a file, it is automatically stored in a variable.
A)True
B)False
Q4) Which of the following is the member function that can be used to store binary data to a file?
A) binary.out
B) write
C) put <<
D) dataout(binary)
E) None of these
Q5) The ios::hardfail bit is set when an unrecoverable error occurs.
A)True
B)False
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Chapter 13: Introduction to Classes
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Sample Questions
Q1) Which of the following is a directive used to create an "include guard" that allows a program to be conditionally compiled to prevent a header file from accidentally being included more than once?
A) #include
B) #guard
C) #ifndef
D) #endif
E) None of these
Q2) When a member function is defined outside of the class declaration, the function name must be qualified with the
A) class name, followed by a semicolon
B) name of the first object
C) class name, followed by the scope resolution operator
D) private access specifier
E) None of these
Q3) Class objects can be defined prior to the class declaration.
A)True
B)False
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15
Chapter 14: More About Classes
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Sample Questions
Q1) A reason to overload the __________ is to allow you to write classes that have array-like behaviors.
A) parentheses ( ) operator
B) curly braces { } operator
C) square brackets [ ] operator
D) colon :: operator
E) None of these
Q2) If you do not furnish a __________, a default one will be provided by the compiler.
A) constructor
B) destructor
C) copy constructor
D) All of these
E) None of these
Q3) You may overload any C++ operator and you may use the operator function to define non-standard operations, such as @ or ^.
A)True
B)False
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Page 16
Chapter 15: Inheritance, Polymorphism, and Virtual Functions
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Sample Questions
Q1) When member functions behave differently depending on which object performed the call, this is an example of A) chaos theory
B) virtual insubordination
C) polymorphism
D) encapsulation
E) None of these
Q2) Pointers to a base class may be assigned the address of a derived class object. A)True
B)False
Q3) When a derived class has two or more base classes, the situation is called A) multiple inheritance
B) multiplicity
C) polymorphism
D) encapsulation
E) None of these
Q4) C++11 provides a way for a derived class to inherit some of the base class's constructors.
A)True
B)False
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Chapter 16: Exceptions and Templates
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Sample Questions
Q1) A generic function that can work with any data type is called an exception template.
A)True
B)False
Q2) In the following code, which statement is the throw point? double divide(int numer, int denom)
{
If (denom == 0)
\(\quad\)throw "ERROR: Cannot divide by zero.\n"; else
\(\quad\)return static_cast<double>(numer)/denom;
}
A) if (denom == 0)
B) throw "ERROR: Cannot divide by zero.\n";
C) return static_cast<double>(numer)/denom;
D) There is no throw point because there is no try block.
E) None of these
Q3) The line containing a throw statement is known as the throw point.
A)True
B)False
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Page 18
Chapter 17: The Standard Template Library
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Sample Questions
Q1) A sequence container organizes data in a sequential fashion, similar to an array.
A)True
B)False
Q2) A(n) __________ is like a pointer. It is used to access the individual data elements in a container.
A) element access operator
B) subscript indicator
C) global data finder
D) iterator
E) None of these
Q3) Select all that apply. An object of a class that overloads the function call operator is a(n)
A) call operator
B) function object
C) functor
D) overloader object
Q4) An iterator is a function that is used to access items in an array.
A)True
B)False
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Chapter 18: Linked Lists
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Sample Questions
Q1) If the head pointer points to nullptr, this indicates
A) the list has been previously created and then destroyed
B) the list needs to be destroyed
C) there are no nodes in the list
D) the list is full and cannot accept any new nodes
E) None of these
Q2) Which type of list does not contain a null pointer at the end of the list?
A) backwards linked
B) doubly linked
C) circular linked
D) null linked
E) None of these
Q3) When you create a linked list you must know in advance how many nodes the list will contain.
A)True
B)False
Q4) Nodes in a linked list are stored in contiguous memory.
A)True
B)False
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Chapter 19: Stacks and Queues
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Sample Questions
Q1) Computer systems use stacks. For example, when a function is called, they create local variables on a stack which are removed from the stack when the function terminates.
A)True
B)False
Q2) A dynamic stack starts as an empty linked list.
A)True
B)False
Q3) The two most common queue operations are endeque and deque.
A)True
B)False
Q4) Static stacks have a __________ size and are implemented as __________.
A) fixed, linked lists
B) variable, arrays
C) fixed, arrays
D) variable, linked lists
E) None of these
Q5) The STL provides containers for deque and queue.
A)True
B)False
21
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Chapter 20: Recursion
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Sample Questions
Q1) The recursive factorial function calculates the factorial of its parameter. Its base case is when the parameter is
A) returned
B) received
C) one
D) zero
E) None of these
Q2) Indirect recursion means that a function calls itself n number of times and then processing of the function starts from the first call.
A)True
B)False
Q3) A recursive function cannot call another function.
A)True
B)False
Q4) To solve a problem recursively, you must identify at least one case in which the problem can be solved without recursion.
A)True
B)False
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Page 22
Chapter 21: Binary Trees
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Sample Questions
Q1) All nodes to the right of a node hold values greater than that node's value.
A)True
B)False
Q2) A node that has no children is known as a
A) root node
B) head node
C) leaf node
D) pure binary node
E) None of these
Q3) Binary trees are commonly used to organize key values that index database records.
A)True
B)False
Q4) The process of stepping through the nodes of a binary tree is known as A) climbing
B) traversing
C) stepping through
D) branching out
E) None of these
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Page 23