Variables
A name for a memory location where data can be stored and retrieved.
What are Variables?
A collection of data objects and a set of predefined operations on those objects.
What is Data Type?
A whole number, such as 3, 45, -453.
What is Integer?
Decimals
How does python print numbers?
This datatype is a class containing many methods allowing the manipulation of the contained data.
What is String?
Thinking about Variables first.
What do we need before writing programs?
This is a named segment of code that can be, among other things, a descriptor or a data type (not primitive).
What is a class?
This is the largest integer data type.
What is long?
Single digit can have the value 0 or 1.
What is Bit?
"hello world" is an example of this
What is a String literal?
By creating a variable.
How do get to a cell in memory?
A Boolean variable has the value True or False.
What is Boolean?
Group of 8 bits.
[0,0,0]
What does 3*[0] return?
A single character, where a character can be any letter, digit, punctuation mark, or symbol that can be typed.
A variable that can only be used in a specific sub/function.
What is a local variable?
char (Character); wchar_t (Wide character); int (Integer); float (Floating point); double (Double floating point); bool (Boolean); void (Valuless).
What are the 7 Data Types?
int, short, long, byte.
What is Integer Data Types?
x does not have a value until you give x a value.
What is the value of x?
Escape character that means to treat the next character as a literal.
What is /.
Converts to any value given to it, to a string and then formats it with the format given.
What is ToString?
A modifier alters the meaning of the base data type so that it more precisely fits the needs of the various situations.
What are data type modifiers?
Holds a date or time, stored as an integer which is often the number of milliseconds from the Unix epoch.
What is Date/Time?
A number with the value 1 to 9 (base 10)
What is Denary Number?
This is the method of checking equality between strings.
What is .equals()?