Exam 1 Review: Chapters 1-6 & 10 Concepts

Exam 1 Review General Concepts

• Exam 1 covers chapters 1, 2, 3, 4, 5, the structures and classes section of chapter 6, and the pointers part of chapter 10.
• Material from the book, labs, and slides is relevant

Fill-in-the-Blanks

• When a control statement is inside another, it is nested.
• \n (newline) and \t (tab) are examples of escape sequences.
• The array int myArray[12]={1,2,3,6,5,4,7,1,2} has 12 indexed variables.
• In cout << *p1;, the * is the dereference operator.
• A(n) infinite loop may occur if nothing within a while loop causes the condition to become false.
• In a switch statement, statements after the default label execute if no case values match.
• To use functions for manipulating c-strings, the <cstring> library must be included.
• In C++, :: is the scope resolution operator.
• Casting is changing a value's type to another type.
• The extraction operator >> follows cin, and the insertion operator << follows cout.
• Class members are private by default.
• If a variable is passed by reference, changes to the formal parameter affect the actual parameter.
• To use setw, the <iomanip> library must be included.
• Functions with the same name are overloaded functions
• The scope of a variable determines where it can be used.
• The six comparison operators in C++ are:
  • == (equal to)
  • != (not equal to)
  • < (less than)
  • > (greater than)
  • <= (less than or equal to)
  • >= (greater than or equal to)

True or False

• False, the amount of memory depends on both the number of elements and the size of each element.
• True
• False, C-strings are character arrays, while string objects are instances of the string class, offering more functionality.
• True
• False, p2 is an integer.
• False, the order of arguments must match the order of parameters.
• True
• True
• True
• False, it will output just 5.
• True

Code Problems

• Write a function named divide that takes two integers and returns the first divided by the second.
• Add code to the divide function so the second integer has a default value of 5.
• Write C++ code that reads an integer from the user, passes it as a pointer to a function named absoluteValue, and updates the original integer with its absolute value.
• Write a void function with two integer call-by-reference parameters that output the sequence 6, 12, 18, 24.
• Write a class definition for a Table with members for name, material, length, and width, including mutator and accessor functions.
• Write a program that defines a function to populate an array with a series of positive and negative integers, then another function to separate these into two arrays (positive and negative) and print their contents.

Debugging

• Find and correct all five errors in a given C++ program designed to print a reversed c-string.

Fill-In-The-Blanks (Code Completion)

• Complete a function call to myFunction(int i, char j, string k) with valid arguments.
• Complete code to output "beep" using a loop that iterates through a string.
• Complete code that sets a pointer and outputs the value 12 after some pointer manipulation:
  • int *ptr2 = &y;
  • *ptr1 = ptr2;
  • *ptr2 = 12;
  • cout << *ptr1 << endl;
• Complete the program to input and output name and student ID:
  • getline(cin, myClass[i].name);

Code Evaluation

• Determine the exact output of various small C++ programs, considering data types and order of operations.
• Pay close attention to whether the output is an integer or a decimal-based number.
• Consider operator precedence and data type conversions which determine the final output.

Review key concepts for Exam 1, covering chapters 1 through 6 (structures and classes) and chapter 10 (pointers). Focus on materials from the textbook, lab exercises, and lecture slides. Key topics include nested control statements, escape sequences, arrays, and operators.