1. Prepared By: G.UshaRani B.Pranalini A.S.Lalitha
OVERVIEW OF C LANGUAGE
Prepared By:
G.UshaRani
B.Pranalini
A.S.Lalitha

2. CONTENTS INTRODUCTION CHARACTERSTICS STRUCTURE OF PROGRAM DATA TYPE
IF ELSE
SWITCH CASE
LOOPING
ARRAY
POINTER
STRUCTURE
FUNCTION

3. INTRODUCTION
C language is one of the most popular computer language today because it is a structured ,low level ,machine dependent language
It is developed by DENNIS RITCHIE in between 1969 and 1973 at bell labs.

4. CHARECTERISTICS
There are a small, fixed number of keywords, including a full set of flow of control primitives : for, while, if, do while and switch.
More than one assignment may be performed in a single statement.
There are a large number of arithmetical and logical operators, such as +, +=, ++, &, ~, etc.

5. STRUCTURE OF PROGRAM Documentation Section Link section
Defining section
Global declaration section
Main function section {
Declaration part Executable part. }
//optional
//Must

6. Sub program section
//optional •
Function 1
Function 2
Function n

7. WHAT IS DATA TYPE ?
A data type in a programming language is a set of data values having predefine characteristics.
there are three classes of data types: Data Type
Primitive
derived
user define

8. TYPES OF DATA TYPE
In c language compiler support five fundamental data type namely integer (int), character(char), floating point(float),double and void.
Derived data types are array, structure, pointer, function.
A user define data type is basically made by the user itself.

9. IF ELSE STATEMENT
The if statement is a powerful decision making statement . If ....else statement is a extention of the simple if statement
. The general form is :
if(test expression) {
true-block statement(s) }
else
false –block statement(s) n

10. SWITCH CASE
It is a control statement that provides a facility for multiway branching from a particular point.
syntax:
switch(expression) {
case labels: break; }

11. LOOPING LOOP For loop While loop Do while loop
To execute a set of instructions repeatedly until a particular condition is being satisfied.
LOOP
For loop
While loop
Do while loop

12. Syntax of loops For loop-
For(intialization ; test condition ; increment) {
Body of the loop }
While loop- While(test condition) {
Body of the loop }
Do while loop- do {
body of the loop }

13. ARRAY arrayname[size]; Type of array data type Multi-dimensional
An array is a collection of elements of the same data type.
Syntax :
arrayname[size]; Type of array
data type
Multi-dimensional
1 dimensional
2 dimensional

14. POINTER
C allow us to store the address of one variable in another variable.
Syntax:
data type *ptrname;
STRUCTURE
Binding of different type of data member in a single entity.
struct structurename different datatype };
Syntax: {

15. FUNCTION
A function definition specifies the name of the function, the types and number of parameters it expects to receive, and its return type.
Types of functions
Built in function User define function