Tips and Tricks for declaring variables | C Weekly | Power Of C

Tips and Tricks for declaring variables


Declaring variables is not a easy task. It is a difficult and mind confusing task. So here, I am providing some tips that can help you to declare variables easily in C Programming.

Always try to follow the following points :

1. Every variable name must start with a letter(a-z , A-Z) or a underscore( _ ) 

2. Never start a variable name with numbers,symbols,etc

3. A variable should not contains special characters like $  < * & ^ % #, etc

4. A variable can contain only digits,letters(it may be upper case or a lower case),underscore

5. Variables must be realistic and connected to real life problem, for example if you are writing a program for calculating total marks of student then use the variables like total_marks,etc

6. Do not use short,letter names. for example, to store student total marks don't use the variables like a,b,f,m,etc. they are confusing names. 

7. Avoid too much long names.

8. You can use following naming pattern.

* Camel Case : In this case the first letter of each word in a compound word is capitalized. For example, variable for  total marks in camel case can be written as TotalMarks.
  In this letter 'T' of  total and letter 'M' of marks is capitalized.

* Pascal Case : In this case, generally the first letter of every word in  a compound word is capitalized except that the first letter of first word is in lower case. For example,variable for total marks in pascal case can be written as totalMarks. 
In this only 'M' of marks is capitalized.

9. Naming a variable is case sensitive. It means that Marks and marks is different and they are different variables. It is better to avoid such situations.

10. Never use a reserved keyword of C for naming a variable. For example,you cannot use void as a variable name.

11. The global variable's name should be start with a capital letter i.e. Global_var.

12. Local variable's name should be start with a small letter i.e. local_var.

13. Constant variable's name should be in all capital letters i.e.
PIE etc.

14. The variables with short life time should be of short name i.e. i, j, k.

15. The variables which have long life time should be of long name as rate_of_intrest etc.

   

Comments

Post a Comment

Popular posts from this blog

Conditional Statements and Conditional Operator | C Weekly

Image
Welcome back, Today we are gonna talk about very interesting topic in programming - "Conditional Statements". As we know that a computer program is a set of statements, in previous blog discusses some types of statements in C. Now take a look on Conditional statements. Conditional Statements: Conditional statements are those statements which are based on some condition. For example you have some lines of code that you want to run only if a condition satisfy and you do not want that code to be run if the condition is not satisfy. But by default a C program execute in sequential manner that means one statement after another is execute as they were written. Consider the following example.         Statement 1;         Statement 2;         Statement 3;         Statement 4; First the compiler execute statement 1 then statement 2 and so on. If you put some condition for a block of statements the fl...
Read more

C Weekly | Data Types In C | Variables | Comments | Simple Program

Image
Data Types Hello everyone !! Till now you are aware about what is c? why c is popular and how a c code runs in system, what are the rules for declaring variables?? Before data types we will try to understand what so called variable is?? Do you know what is variable ?? A variable is just a name of a block of memory in our computer storage area where we can store different type of data for performing different operations on that data. Variables A variable is a name of memory in computer that can be used to store values. value of a variable can be of any type ..it may be integer,floating ,character,etc.. The type of value in variable is given by the datatypes.every variable has a associated datatype which decides type of value in variable. Variable declaration Syntax :     qualifier data_type variable_name ; it is not necessary to use qualifiers. for example - int a; This will create a block in memory named a where we can store in...
Read more

Fundamentals of C | feel_the_coder | C Weekly

Fundamentals of C Programming  Token Any individual entity in a c program is called as the token. There are five types of token. 1. Identifier - Identifier are the name given to any variable , function , macro, etc. They are generally used to identify the parts of a program as suggested by its name. for example - the name given to any function ,variable,etc 2.Keywords - Keywords are the special words that convey a special meaning to the compiler.There are total of 32 keywords in C Programming. Some Of the Keywords are listed below : if             void       int           float     double       long        short      else    for           do          while      auto      char         ...
Read more