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