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Data Types Program
Questions based on Data Types programs done in class.
| Question | Answer |
|---|---|
| Declare an integer variable labeled x | int x; |
| Declare an integer variable labeled y | int y; |
| Declare a real number labeled real | double real; |
| Declare a boolean labeled boo | boolean boo; |
| What is a declaration? | Process of telling the compiler the name of a variable and the type of data to be stored in the |
| what is data? | Information formatted in a distinct way |
| What is a data type? | determine how data is stored, possible values for data. |
| What is Primitive datatypes? | The most basic datea types provides the ability to program words. |
| What is a String? | Class provided by java that provides the ability to program words. |
| What is a String Literal? | Character(s) enclosed in double quotation marks. |
| define assignment | Process of storing a value at a variable's memory location assignment operator |
| What is syntax? | The usage of punctuation within the code to allow the compiler to understand it. |
| what is program block? | the code enclosed between () |
| What does int data allow? | allows the storing of integers (positive and negative whole numbers) |
| How much bits/bytes does a int variable take? | 32bit- 4 bytes |
| How much bits/bytes does a real variable take? | 64bits- 8 bytes |
| How many bits does a boolean take? | 1 bit |
| the double data allows? | it allows you to input decimal numbers |
| The boolean data allows? | Allows you to store a true or false statement |
| What does a boolean data type require? | requires single quotations marks |
| Common names for temp variables | i, j, k, and n are foe int c, d, and e for characters |
| What are the rules for naming camelBack notation? | First letter is lowercase and each subsequent word, the first letter is capitalized. |
| What characters should be avoided? | One- character variables should be avoided except for temporary "throwaway" variables. |
| Define Naming rules | alphanumeric no spaces special characters except _ $ MUST begin with letter |
| Define Naming conventions | camelback notations names are meaningful One-characer variable names should be avoided |
| Define declaration | Telling the compiler what kind of variables you want to use and store. |
| How to declare a real variable? | double <variable>; |
| How to declare a String? | String <variable>; |
| How to declare a character? | char <variable>; |
| What is the basic syntax for assignment? | variableName=<variable>; |
| What is main method? | The beginning of a program |
| How do you start a single line comment? | // |
| How do you start and end a multi-line comment? | /*-start */-end |
| What must match the class name? | The file name. |
Created by:
Coliohotburn
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