1. CS 1428 Exam I Review

2. Exam Format 105 Total Points All point totals are approximations
40 Points Writing Programs
25 Points Tracing Algorithms and determining results
10 Points Short Answer
35 Points Fill in the Blank
All point totals are approximations
Similar to quizzes and programming assignments

3. Example Programming Problem
Write a program that reads a number of golf scores followed by that number of scores from a file named “scores.txt” Total the scores as you read them in and print out the average score to the screen. (Note: This problem is slightly more difficult than the problems on the exam.)

4. Example Tracing Problem
What will the EXACT output of the following program be?
int foo = 9;
string str = "Hey!";
float foo2 = 5.7;
foo2 = foo - foo2;
if (foo > foo2)
cout << "Hello!";
else if (foo < foo2)
cout << foo2;
else
cout << foo;
cout << endl;
cout << "foo2 is: " << foo2 << endl;

5. Example Short Answer
Why is it a bad idea to compare two floating point numbers (e.g. doubles) with the equals (==) operator?

6. Chapter 1 0 points Types of errors
Terminology
Bits, bytes
kilo, mega, giga, tera
What do they mean?
Machine language, assembly language, high- level language
Von Neumann architecture
Problem solving process
Types of errors
Important stuff, but not covered on the exam

7. Chapter 2 50 Points Variables and Identifiers Assignment
Valid identifiers
Data types
Integer types
Floating Point types
Characters
Boolean
Assignment
Arithmetic Operators
Make sure you understand the mod(%) function

8. Chapter 3 30 Points cin Mathematical expressions static_cast Constants
With prompts
Mathematical expressions
Order of precedence
Combined operators (e.g. += and ++)
static_cast
Constants
Mixed mode operations (mixing floats and ints)
File input and output

9. Chapter 4 25 Points Relational operators Truth tables if statements
Logical operators && || !
if statements
if-else
if-else-if

10. Functions 15 Points Know how to write a function
Header (signature)
Parameters
Return statement
Know how to call a function
Know how to use the return value

11. Loops 10 Points Understand the “for” loop
Initialize, conditional, update
Body of the loop
Review the programs that use loops

12. How to Study Rewrite all the programs. Redo labs.
Learn by doing and recognizing patterns.
Don’t stay up late!! Get some sleep and eat a good breakfast.

13. What to bring Pencils and erasers We will provide scratch paper
No calculators

14. Questions