Variables in C Programming

Variables in C Programming

Variable name in C Language are the names given to locations in memory. These locations can be an integer, character or real constants. In addition, a variable type can only hold the same constant type. In this lesson we will learn how to work with Variables in C Programming.

Rules for Variable naming

First character in a variable name must be an underscore or alphabet. Here are the rules, with some examples,

  • A variable name is a combination of alphabets 1 to 31, digits, or underscores.

Variables in C Programming

  • No special symbol in a variable name is valid, except underscore.

Valid and Invalid Variable Names in C Programming

  • No comma is allowed in a variable name.
  • In addition, no blank space is valid.

Always try to create meaningful names. For example, variable name for calculation results of students can be given variable name result.

Variable Declaration

Declaration of a variable in C language is quite easy. The following is the syntax showing how to declare variables in C programming,

The valid variable declaration examples are shown below. Here, int, char and float are datatypes,

The preceding examples show how a variable is declared, wherein a datatype precedes the variable name.

The following examples demonstrates the usage of variables in C Programming,

Variables in C Programming

Tokens in C Programming
Operators in C Programming
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