Variables are used to store information to be referenced and manipulated in program. Variables are nothing but a kind of containers which…
Variables are used to store information to be referenced and manipulated in the program. Variables are nothing but a kind of container that holds a piece of information. The main purpose of variables is to store and label data in memory, that can be used later on.
Dart language supported the following types:
Numbers in dart represent numeric literals. Programmer can define Numbers as Integer or as Double
*Integer: *Integer values represent non-fractional values (numeric values without decimal point) e.g. “5”
int a = 5;
int is a keyword to declared it as an Integer type, a is the variable name, =is assignment operator, 5 is the value of variable
a, ; indicates the end of the statement.
Double: Double values represents fractional values (numeric values with a decimal point) e.g. “5.5”
double b = 5.5;
double is a keyword to declare it as Double type, b is a variable name,
= is assignment operator, 5.5 is the value of variable
b, ; indicates the end of the statement.
Strings represents a sequence of characters. For Example, if a programmer wants to store first name, last name, etc. the String data type should be used.
String first_name = “XYZ”;
String is the keyword to declared it as String type, first_name is a variable name, = is assignment operator, XYZ is value for a string variable.
String values are enclosed in either single or double quotes.
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