Grupo D: ficha:891434 N°3

Variable

In programming, a variable consists of a space in the storage system (main memory of a computer) and a symbolic name (identifier) ​​that is associated with that space. That space contains a quantity or information known or unknown, that is a value. The variable name is the usual way of referring to the stored value: this separation between name and content allows the name to be used regardless of the exact information they represent. The identifier in the source code of the computer can be linked to a value at runtime and the value of the variable can therefore change during the course of program execution. The concept of variables in computer may not correspond directly to the concept of variables in mathematics. The value of a variable in computing is not necessarily part of an equation or formula and math. In computing a variable can be used in an iterative process: be assigned a value in one place, then using it in another, later reassigned to a new value for later use in the same manera.Procedimientos of this type are known by the name iteration. In computer programming, variables, often assigned to make relatively long descriptive names for use, while the variables in mathematics often have bare names, consisting of one or two characters to brief on their transcript and handling.