Skip to main content

ARRAY---

DEF:-


  • Array is a linear collection of similar elements
  • Array is also known as subscript value
  • Array is a group of value
  • when there is a lot of data then array is required
  • Array are the derived data types in c language which can store the primitive data types of type int, float, char etc.
  • in array each element have index, through index each element can be accessed randomly.

Advantage of Array:--
  1. Code Optimization:- less code to access the data
  2. Ease of traversing:- by using loop we can traverse the element of array
  3. Ease of sorting:- to sort the array only few codes are written
  4. randomly access:- any element access randomly
Disadvantage of Array:-
  1. Fixed size:- the size of array is defined when we declared an array, which cannot be change.Array in c are not dynamically like linked list etc.
Declaration of Array:-
  • An Array can be declared such as we declare the function , only difference is ,In function argument is passed but in array size is declared
  • [] brackets are used to define the size of array
  • index no. is start from 0
Syntax:--data_types  array_name[size of array]; // 1-D Array

example:--   int a[7];  //array a of type int is declared having size 7 and also have a value
                   a[0]=11;  // 11 is insert at index no. 0

Note:-  an Array is initialize when it is declared 

  • int a[7]={11,22,33,44,55,66,77};
  • int a[]={11,22,33,44,55,66,77}; // without giving size
1-Dimensional Array(Default Array) :-
Example:-

2-Dimensional Array:- 2 d array having rows and column, i.e[][] two square brackets having used.
first one for rows and second one for column in each rows
Syntax:--  int arr[4][3]={{1,2,3},{4,5,6},{7,8,9},{10,11,12}};
Explanation:--  here from diagram clearly seen how 2 d array takes memory , 
to access any element bu using index no. is a[1][2]=5;
Example:-

IF YOU LIKE THIS POST SHARE WITH YOUR FRIENDS::::::

Comments

Post a Comment

Popular Posts

Introduction to C

About C:- C is a high-level language . It was initially first developed by D ennis Ritchie in 1972. It was developed to overcome the limitation of previous language such as B,BCPL etc. It was developed for Unix operating System It inherits many features of previous language Features/Advantage:- Simple :- because it provide data types, library function etc. Machine Independent or Portable:- because it can be executed on different machine Procedural language:- Instruction in c program are executed step by step Structured programming language:- break the problem into parts It provide dynamic memory allocation , pointers etc. Speed:-It is faster than another programming language like java, python etc. Disadvantage of C:- It does not support oops concept in which inheritance, polymorphism, encapsulation etc. come. It does not support namespace concept It does not support constructor and destructor There is lack of excepti...
2 comments
Read more

Static Memory Allocation

Statement are of two types:- Declaration:- in which we declare the variable Action:- in which for,if-else,getch,printf,scanf etc are used. SMA(STATIC MEMORY ALLOCATION):-                                whenever we create a program,there is a line of declaration statement(or data type declarartion statement) such as int a;char b;etc. Due to this statement we create a variable a,now this variable is the example of SMA.SMA means how much memory is consumed by variable at the time of compiler,this decision is taken before the compilation. At the compile time these variable such as a and b does not having a memory.Memory is given when program is run i.e when object file convert into .exe file.But when program is run how much memory is taken by the variable is decided at the compilation time.This is known as SMA(Static Memory Allocation).   
Post a Comment
Read more

Functions:---

Definition:- it is basically a piece of code it has name for identification a function can be called multiple times to maintain the reusability and modularity. by writing function we can avoid same writing/piece of code Function aspects:-  3 aspects of function are 1.function declaration:- a function must be declared globally in c , to tell the compiler about function name, function return type, function parameter.           Syntax:-   return_type function_name(arguments or data_types parameter);              example:-   void sum(int a,int b); 2.function call:-  a function can be called anywhere from the program, pass the same no. of parameter as we write in function declaration.         Syntax:-   function_name(argument_list)             example:-   sum(a,b) 3.function definition:-  it contains the actual statements whi...
Post a Comment
Read more