BCA 2nd Sem Notes-File inclusion directives

• UNIT-I (Array)

Definition

Declaration & initialization of 1D 

Accessing array elements

Displaying array elements

Sorting arrays

Arrays and function

Declaration & initialization of 1D

Accessing and Displaying

Memory representation of array [Row Major, Column Major]

Multidimensional array

UNIT-II (Pointers)

Definition

Declaration & initialization

Indirection operator

address of operator

pointer arithmetic

dynamic memory allocation

arrays and pointers

function and pointers

UNIT-III (Strings)

Definition

Declaration & initialization

standard library            function strlen()

  strlen(),strcpy(),       strcat() ,strcmp()

Implementation without using standard library functions

UNIT-IV (Structures)

Definition

Declaration & initialization

Accessing fields

structure operations

Nested structures

Union: Definition  declaration

Differentiate between Union and structure

UNIT-V                                     (C Pre-processor)

Definition
Macro substitution directives
File inclusion directives
Conditional compilation
Bitwise Operators
Shift operators
Masks
Bitfield

UNIT-VI                                (File Handling)

Definition of Files,
Opening modes of files
Standard function
fopen(), fclose(),               feof() fseek(),                     fewind()
Using text files
fgetc(), fputc(),               fscanf()

Program's in C

File inclusion directives

File Inclusive Directives

1. File inclusive Directories are used to include user define header file inside C Program.
2. File inclusive directory checks included header file inside same directory (if path is not mentioned).
3. File inclusive directives begins with #include
4. If Path is mentioned then it will include that header file into current scope.
5. Instead of using triangular brackets we use “Double Quote” for inclusion of user defined header file.
6. It instructs the compiler to include all specified files.

File Inclusion:  pre-processor directive tells the compiler to include a file in the source code program. There are two types of files which can be included by the user in the program:

1.  Standard files: These files contains definition of pre-defined functions like printf(), scanf() etc. These files must be included for working with these functions. Different function are declared in different header files.
   Syntax:      #include< file_name >

where file_name is the name of file to be included. The ‘<‘ and ‘>’ brackets tells the compiler to look for the file in standard directory.

1. user defined files: When a program becomes very large, it is good practice to divide it into smaller files and include whenever needed. These types of files are user defined files. These files can be included as:

Syntax:# include "file name"

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