Computer Science I Study Guide Questions
Course Introduction
Computer Science I is an introductory course that provides a foundation in fundamental computer science concepts, with a primary focus on problem-solving through programming. Students will learn core programming constructs such as variables, control structures, functions, data types, and basic algorithms, typically using a high-level programming language like Python or Java. The course also introduces essential concepts such as debugging, software design, and computational thinking, setting the stage for advanced studies in computer science. Through hands-on projects and assignments, students develop both their programming skills and their ability to analyze and solve problems systematically.
Recommended Textbook
Starting Out with C++ from Control Structures to Objects 9th Edition by Tony Gaddis
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Chapter 1: Introduction to Computers and Programming
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Sample Questions
Q1) A model often used when creating a program that begins with the overall task and refines it into smaller subtasks is a(n)
A) flowchart
B) UML diagram
C) blueprint
D) hierarchy chart
E) None of these
Answer: D
Q2) Which of the following best describes an operator?
A) An operator is a rule that must be followed when constructing a program.
B) An operator allows you to perform operations on one or more pieces of data.
C) An operator marks the beginning or ending of a statement, or is used to separate items in a list.
D) An operator is a word that has a special meaning.
E) An operator is a symbolic name that refers to a variable.
Answer: B
Q3) Programs are often referred to as hardware.
A)True
B)False
Answer: False
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Chapter 2: Introduction to C
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Sample Questions
Q1) Which of the following statements correctly defines a named constant named TAX_RATE that holds the value 0.075?
A) double TAX_RATE = 0.075; B) const TAX_RATE; Double TAX_RATE = 0.075; C) const double TAX_RATE = 0.075; D) double TAX_RATE; Const TAX_RATE = 0.075; E) const TAX_RATE = 0.075;
Answer: C
Q2) Which of the following lines must be included in a program that has string variables?
A) #include (string class)
B) #include namespace std; C) #include <string> D) string var;
E) None of these Answer: C
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Chapter 3: Expressions and Interactivity
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Sample Questions
Q1) Which of the following statements will read an entire line of input into the string object, address?
A) cin << address;
B) cin address;
C) cin.get(address);
D) getline(cin, address);
E) cin.get(length >> width >> height);
Answer: D
Q2) This manipulator causes the field to be left justified with padding spaces printed to the right:
A) left_justify
B) right
C) left
D) left_pad
E) None of these
Answer: C
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) When a relational expression is False, it has the value
A) 1
B) 0
C) 0, 1, or -1
D) -1
E) None of these
Q2) If the expression on the left side of the following is False, the expression on the right side will not be checked.
(a > = b) && (c == d)
A)True
B)False
Q3) When an if statement is placed within the conditionally-executed code of another if statement, this is known as
A) complexity
B) overloading
C) nesting
D) validation
E) None of these
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Chapter 5: Loops and Files
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Sample Questions
Q1) What will the following code display?
Int number = 6;
Cout << ++number << endl;
A) 6
B) 5
C) 7
D) 0
Q2) The condition that is tested by a while loop must be enclosed in parentheses and terminated with a semicolon.
A)True
B)False
Q3) In the following statement, which operator is used first?
While (x++ < 10)
A) ++
B) <
C) neither; the expression is invalid
D) cannot tell without the rest of the code
Q4) An output file is a file that data is written to.
A)True
B)False
Page 7
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Chapter 6: Functions
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Sample Questions
Q1) This is a dummy function that is called instead of the actual function it represents:
A) main
B) stub
C) a driver
D) an overloaded function
Q2) When used as parameters, these types of variables allow a function to access the parameter's original argument:
A) reference
B) floating-point
C) counter
D) undeclared
E) None of these
Q3) One reason for using functions is to break programs into manageable units or modules.
A)True
B)False
Q4) Global variables are initialized to zero by default.
A)True
B)False
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Chapter 7: Arrays and Vectors
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Sample Questions
Q1) What will the following code display?
Int numbers[] = {99, 87, 66, 55, 101};
For (int i = 1; i < 4; i++)
Cout << numbers[i] << " ";
A) 99 87 66 55 101
B) 87 66 55 101
C) 87 66 55
D) Nothing. This code has an error.
Q2) Given the following declaration, where is the value 77 stored in the scores array?
Int scores[] = {83, 62, 77, 97, 86}
A) scores[0]
B) scores[1]
C) scores[2]
D) scores[3]
E) scores[5]
Q3) Although two-dimensional arrays are a novel idea, there is no known way to pass one to a function.
A)True
B)False
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Chapter 8: Searching and Sorting Arrays
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Sample Questions
Q1) A selection sort and a binary search can be applied to STL vectors as well as arrays.
A)True
B)False
Q2) Array elements must __________ before a binary search can be performed.
A) summed
B) set to zero
C) positive integers
D) sorted
E) None of these
Q3) Before you can perform a selection sort, the data must be stored in ascending order.
A)True
B)False
Q4) If you are using the bubble sort algorithm to sort an array in descending order, the smaller values move toward the end.
A)True
B)False
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10
Chapter 9: Pointers
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Sample Questions
Q1) The unique_ptr is the sole owner of a piece of dynamically allocated memory.
A)True
B)False
Q2) If you are using an older computer that does not support the C++11 standard, you should initialize pointers with
A) the integer 0 or the value NULL
B) the null terminator '\0'
C) a nonzero value
D) Any of these
E) None of these
Q3) The __________, also known as the address operator, returns the memory address of a variable.
A) asterisk (* )
B) ampersand ( & )
C) percent sign ( % )
D) exclamation point ( ! )
E) None of these
Q4) In C++11, the nullptr keyword was introduced to represent the address 0.
A)True
B)False
Page 11
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Chapter 10: Characters, C-Strings, and More About the String Class
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Sample Questions
Q1) Which of the following statements appropriately defines a C-string that stores names of up to 25 characters?
A) char name[25];
B) string name[25];
C) char name[26];
D) string name[24];
E) None of these
Q2) To use the strlen function in a program you must include
A) #include<strlen>
B) #include<iostring>
C) #include<cstring>
D) #include<stringlib>
E) None of these
Q3) Which of the following will return true if the argument is a printable character other than a digit, letter, or space?
A) isprint
B) ispunct
C) ischar
D) isnotdls
E) None of these
12
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Chapter 11: Structured Data
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Sample Questions
Q1) Before a structure can be used it must be
A) declared
B) dereferenced
C) initialized
D) All of these
E) None of these
Q2) Passing a structure as a constant reference parameter to a function
A) can potentially result in changes to the structure's members
B) guarantees not to result in changes to the structure's members
C) will always change the structure's members
D) None of these
Q3) Which of the following describes only the general characteristics of an object?
A) initialization
B) abstraction
C) detailed specification
D) initiation
E) None of these
Q4) Structure variables may be passed as arguments to functions.
A)True
B)False
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Chapter 12: Advanced File Operations
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Sample Questions
Q1) By default, files are opened in binary mode.
A)True
B)False
Q2) Which of the following means accessing information from a file non-sequentially?
A) linear access
B) incremented acces
C) random access
D) protected access
E) None of these
Q3) ofstream, ifstream, and fstream are
A) header files
B) libraries
C) data types
D) string arrays
E) None of these
Q4) Only one file stream object can be declared per C++ program.
A)True
B)False
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Page 14
Chapter 13: Introduction to Classes
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Sample Questions
Q1) In C++11 you can have one constructor call another constructor in the same class by using
A) constructor delegation
B) in-place initialization
C) a member initialization list
D) None of these
Q2) If you do not declare a destructor function, the compiler will furnish one automatically.
A)True
B)False
Q3) Constructor functions are often used to allocate memory that will be needed by the object.
A)True
B)False
Q4) Which of the following is used to protect important data?
A) the public access specifier
B) the private access specifier
C) the protect member function
D) the class protection operator, @
E) None of these
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Chapter 14: More About Classes
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Sample Questions
Q1) Select all that apply. Given the following code fragment, which of the things shown below happen when the statement on line 8 executes?
1 int square(int a)
2 {
3 \(\quad\)return a * a;
4 }
5 int main()
6 {
7 \(\quad\)int x = 0;
8 \(\quad\)x = square(5);
9 \(\quad\)cout << x << endl;
10\(\quad\)return 0;
11 }
A) The square function is called and the value 5 is passed as an argument.
B) The square function calculates 5*5 and stores the result, 25, as a temporary value.
C) The temporary value is copied (assigned) to the variable x.
D) The temporary value is discarded by the system.
E) None of these
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Chapter 15: Inheritance, Polymorphism, and Virtual Functions
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Sample Questions
Q1) Pointers to a base class may be assigned the address of a derived class object. A)True
B)False
Q2) In C++11, using constructor inheritance, it is possible for any of the base class's constructors to be inherited.
A)True
B)False
Q3) A virtual function is a function that expects to be __________ in a derived class. A) ignored
B) called frequently C) overridden D) private
E) None of these
Q4) When arguments must be passed to the base class constructor, they are passed from the derived class constructor's header line.
A)True
B)False
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Chapter 16: Exceptions and Templates
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Sample Questions
Q1) Given the following code, what will happen if the value of denom is 0? 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) Nothing will happen because there is no catch block.
B) The program will display ERROR: Cannot divide by zero.and then move to the statement following the if/else block.
C) The program will display ERROR: Cannot divide by zero.and then halt.
D) There is no throw point because there is no try block.
E) None of these
Q2) The try/catch/throw construct is able to handle only one type of exception in a try block.
A)True
B)False
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18
Chapter 17: The Standard Template Library
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Sample Questions
Q1) A(n) __________ is a class that stores data and organizes it in some fashion.
A) iterator
B) container
C) template
D) box
E) None of these
Q2) A vector is an associative container that works like an array but is dynamic in size.
A)True
B)False
Q3) The algorithms provided by the STL are implemented as __________ and perform various operations on elements of containers.
A) virtual functions
B) function templates
C) global variables
D) private data members
E) None of these
Q4) A set is an associative container containing elements that must all be unique.
A)True
B)False
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Chapter 18: Linked Lists
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Sample Questions
Q1) To build a list initally, you can use a(n) __________ routine.
A) build
B) append
C) constructor
D) initialization
E) None of these
Q2) To append a node to a list means to
A) delete a node from the beginning of the list
B) delete a node from the end of the list
C) add a node to the beginning of the list
D) add a node to the end of the list
E) None of these
Q3) Select all that apply. Variations of the linked list are
A) doubly linked list
B) circular linked list
C) frontward linked list
D) backward linked list
Q4) The Standard Template Library (STL) provides a linked list container.
A)True
B)False
Page 20
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Chapter 19: Stacks and Queues
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Sample Questions
Q1) Given the following code, assume the myQueue object is a queue that can hold integers and that value is an int variable. 1 myQueue.enqueue(0);
2 myQueue.enqueue(1);
3 myQueue.enqueue(2);
4 myQueue.dequeue(value);
5 myQueue.dequeue(value);
6 myQueue.dequeue(value);
7 cout << value << endl;
Assume that the dequeue function, called on lines 4, 5, and 6, stores the number removed from the queue in the value variable. What will the statement on line 7 display?
A) 0
B) 1
C) 2
D) None of these
Q2) A stack that is implemented as a linked list is known as a deque.
A)True
B)False
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21
Chapter 20: Recursion
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Sample Questions
Q1) A recursive function cannot call another function.
A)True
B)False
Q2) The QuickSort algorithm was developed in 1960 by
A) Bjarne Stroustrup
B) Tony Gaddis
C) C.A.R. Hoare
D) C.M. Turner
E) None of these
Q3) A problem can be solved with recursion if it can be broken down into successive smaller problems that are the same as the overall problem.
A)True
B)False
Q4) The __________ of recursion is the number of times a recursive function calls itself.
A) level
B) breadth
C) type
D) depth
E) None of these
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Chapter 21: Binary Trees
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Sample Questions
Q1) The InOrder method of traversing a binary tree involves traversing the node's left subtree, processing the node's data, and then traversing the node's right subtree.
A)True
B)False
Q2) Binary trees can be divided into A) branches
B) leaves
C) subtrees
D) sawdust
E) None of these
Q3) When a binary tree is used to facilitate a search, it is referred to as a A) binary queue
B) binary ordered deque
C) sort algorithm
D) binary search tree
E) None of these
Q4) All nodes to the right of a node hold values greater than that node's value.
A)True
B)False
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