C introduction

 C Programming  

                             

C has been written in assembly languages .C is a robust language with a rich set of built-in function and operator.Programs those are written in C are highly portable.C does not provide Object Oriented Programming (OOPs) concepts.C does not provide Constructor and Destructors.

Rules for Constructing Character Constants

1.    A character constant is a single alphabet a single digits or a single   

     Special symbol enclosed within single inverted commas.

2.    The Maximum length of a character constant can be 1 character.

Variables: -

    In C a quantity that may vary during program execution is called a variable.

Rules for Constructing Variable Name

1.    A variable name is any combination of alphabets, digits or underscores.

2.    The first character in the variable name must be an alphabet.

3.    No Commas or blank are allowed within a variable name.

4.    No special symbol other than an underscore can be used in a variable name.