Short Answers
1. What does a professional programmer usually do first to gain an understanding of a problem? The first thing a professional programmer will usually do to gain the understanding of a problem is to work directly with, and interview the customer.
2. What is pseudocode? Pseudocode is an informal language that has no syntax rules, and is not meant to be compiled or executed.
3. Computer programs typically perform what three steps? 1) Input is received. 2) Some process is performed on the input. 3) Output is produced.
4. What does the term “user-friendly” mean? "User friendly" means that the software or device is easy to use, and that the person using it won't have a hard time learning how to use it or have problems while using it.

Algorithm Workbench
1. Design an algorithm that prompts the user to enter his or her height and stores the user’s input in a variable named height. 1. Get the user to input their height. 2. Store user height as a variable named height
2. Design an algorithm that prompts the user to enter his or her favorite color and stores the user’s input in a variable named color. 1. Get the user to input their favorite color. 2. Store user color as a variable named color

Programing Exercises
1. Personal Information
Display “Enter your name”
Input name
Display “Enter your address, with city, state, and zip”
Input address, with city, state, and zip
Display “Enter your telephone number”
Input telephone number
Display “Enter your college major”
Input college major

4. Total Purchase
Display “Enter the first item”
Input Item 1
Display “Enter the second item”
Input Item 2
Display “Enter the third item”
Input Item 3
Display “Enter the forth item”
Input Item 4
Display “Enter the fifth item”
Input item 5
Set subtotal = item1+item2+item3+item4+item5
Set sales tax = (subtotal*.06)
Set total = subtotal + sales tax
Display “Your Subtotal is”, subtotal, “The sales tax is”, sales tax, “Your total is”, total

Unit 2 Research 1
Java
1. Variable names are case-sensitive.
2. A variable’s name can be any legal identifier.
3. It can contain Unicode letter, Digits and Two Special Characters such as Underscore and dollar Sign.
4. Length of Variable name can be any number.
5. Its necessary to use Alphabet at the start (however we can use underscore , but do not use it )
6. Some auto generated variables may contain ‘$‘ sign. But try to avoid using Dollar Sign.
7. White space is not permitted.
8. Special Characters are not allowed.
9. Digit at start is not allowed.
10. Subsequent characters may be letters, digits, dollar signs, or underscore characters.
11. Variable name must not be a keyword or reserved word.

Visual Basics
1. You must use a letter as the first character.
2. You can't use a space, period (.), exclamation mark (!), or the characters @, &, $, # in the name.
3. Name can't exceed 255 characters in length.
4. Generally, you shouldn't use any names that are the same as the functions, statements, and methods in Visual Basic. You end up shadowing the same keywords in the language. To use an intrinsic language function, statement, or method that conflicts with an assigned name, you must explicitly identify it. Precede the intrinsic function, statement, or method name with the name of the associated type library. For example, if you have a variable called Left, you can only invoke the Left function using VBA.Left .
5. You can't repeat names within the same level of scope. For example, you can't declare two variables named age within the same procedure. However, you can declare a private variable named age and a procedure-level variable named age within the same module.
Python
1. Must begin with a letter (a - z, A - B) or underscore (_)
2. Other characters can be letters, numbers or _
3. Case Sensitive
4. Can be any (reasonable) length
5. There are some reserved words which you cannot use as a variable name because Python uses them for other things.