Dynamic variable

In computer programming, a dynamic variable is a local variable that is created to reside in manually allocated memory that can be allocated and deallocated. It is divided into three types, namely implicit heap dynamic variable, explicit heap dynamic variable and lost heap dynamic variable (dangling pointers). It has indefinite scope and dynamic extent. It is mostly used in niche programming languages which include Lisp, Ruby, APL, PHP, TcL, TEX and PERL.

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