Variables in C Programming
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This document discusses variables in C programming. It explains that variables are names that refer to memory locations where values can be stored and changed during program execution. It provides the syntax for declaring variables using different data types like int, float, double, and char. Rules for variable names are also outlined, such as starting with a letter or underscore and avoiding reserved words.
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Variables in C Programming
- 1. C-Programming Tutorials N.V.Raja Sekhar Reddy www.programming9.com VARIABLES 1 www.programming9.com
- 2. Variables in C Variables are names used to refer to some memory locations of computer. The piece of information stored at this location is referred as value of a variable. The variables are not fixed values and might change during the execution of a program. 2 www.programming9.com
- 3. Syntax to declare a variable Syntax: Datatype Variablename; int d; float a,b; double f; char ch; etc., 3 www.programming9.com
- 4. Defining a Variable int a=10, b=20; float f=23.145; double d=20.0; char ch='x'; 4 www.programming9.com
- 5. In RAM (Physical Memory) 5 www.programming9.com
- 6. Rules for using Variables The variable name can contain letters, digits and the underscore ( _) . The first character of the variable name must be a letter or underscore ( _). Variable name must not be the same as C reserved words or keywords. It should not contain white spaces. 6 www.programming9.com
- 7. Brought You By www.programming9.com 7 www.programming9.com