What is the difference between the var data type and the string data type?

var is a keyword that instructs the compiler to automatically determine the variable's type based on the assigned value. The type is determined at compile time and cannot be changed later.

String is a specific, explicitly declared data type in Dart, used for storing sequences of characters.

Attribute	var	String
Type	Determined by the compiler	Explicitly declared string type
Usage	For variables with obvious type	For variables storing textual data
Type change	Impossible after initialization	Always stores only strings