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DataTypes Program
Questions based on DataType program done in class
| Question | Answer |
|---|---|
| What is String? | the ability to program with words |
| What is String literal? | character(s) enclosed in double quotation marks |
| What is Syntax? | grammar,order and structure of the element in a language statement |
| What is Declaration? | process of telling the compile the name of a variable and the type of data to be stored in the memory location allocated to the variable |
| What is Data Types? | classification that determines how data is stored |
| What is boolean? | allows storage of the value true or false. |
| What is a character variable? | allows storage on any keyboard character |
| What is a integer variable? | allows storage of integers (w/o decimals) |
| What is assignment? | process of storing a value at a variable's memory |
| What is a real variable? | allows storage of a irrational and rational numbers (with decimals) |
| What is Data Types? | classification that determines how data is stored, possible values for data and the operations that can be performed on the data |
| What is program block? | the code enclosed between open and closed curly braces |
| What is data? | information formatted in a distinct way |
| What is hard coding? | not using symbolic names |
| What size is a boolean? | 1 bit |
| What size is a character? | determined by JVM |
| What size is a String? | 64 bits - 8 bytes |
| Rules | must be followed or program produces a compiler error. |
| Conventions | are standards followed by programmers of a particular language. |
| Naming Conventions | variable names should be meaningful, classes start with capital letter and constants are all capitals |
| Naming rules | alphanumeric and no spaces |
| Primitive data types | int, String and double |
| What size is an integer? | 32 bits - 4 bytes |
| What size is a double? | 64 bits - 8 bytes |
| What size is a character? | determined by JVM |
| the basic syntax for declaration? | <data type> variableName; |
| the basic syntax for assignment? | |
| When should one character variables be used? | when they are temporary |
| Where does the compiler begin? | main method |
Created by:
alizahmcg
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