This PPT is for beginners of C Programming. It explains Variables concept in c.

1. C-Programming Tutorials
N.V.Raja Sekhar Reddy
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VARIABLES
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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.
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3. Syntax to declare a variable
 Syntax:
Datatype Variablename;
int d;
float a,b;
double f;
char ch; etc.,
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4. Defining a Variable
int a=10, b=20;
float f=23.145;
double d=20.0;
char ch='x';
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5. In RAM (Physical Memory)
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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.
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7. Brought You By
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