Rules in naming variables in programming?

Answer 1

there are various types of naming rule provide for function ,identifier,i.e variables.but naming rule for variable must meet certain condition..

1.you can easily idenfy what is variable for.for eg.you may use

int a;/to store no of student in your prog. but it is better instead of using "a",you can write any of the following definition

int stu; or int stu_no; or int studentno;

2.it must be abbreviated.because although modern compiler support 32 char variable but still where you use that variable you have to type that name again &again.

so for eg. in the above case int stu_no; is optimal.

when these precondition are met then here are some rules for naming a variable:

1.you use only English alphabet,numeric no,& _(underscore).

2.you must start with a alphabet. then you continue with alphabet or numeric or under score.for eg. you can define a variable like

int stu_comp_2009;//for no of student 2009 batch.

3.no variable can start with number or _.such naming may cause some compiler do the right job but maximum would not support this.

Answer 2

A variable in C starts with an alpha character, followed by any number of characters which are alpha, numeric, or underscores, and may not be a word that is part of the C syntax.

For instance, you can name a variable "What", "are", "the" "rules", but you can't name it "for", nor "4square" nor "a+" nor "bobble-head".

Traditionally, c programmers have adopted i,j,k,l,m,n as names of indexes. While traditionally, programmers have used lowercase for variables and UPPERCASE for constants, programmers at Microsoft started using "Hungarian notation" in the late 1980s, which encodes the type of variable into a camel-cased variable name, and this practice has been adopted by many.

Answer 3

1. What are the rules used in naming variable? Give examples.

Answer 4

Rules used in naming variable Give examples

Answer 5

What r the rules used in naming variable?Give examples.