File management functions in C allow programs to work with files. They provide functions to open, read, write, and close files. Some key functions include fopen() to open a file, fread() and fwrite() to read from and write to files, and fclose() to close a file. Files can be opened in different modes like read, write, append depending on whether the file needs to be read from or written to. Command line arguments allow passing of inputs to a program from the command line when it is launched.
This world have numerous kinds and diversity .This kinds and diversity remain in whole world two two third is aquatic ,fresh water and marine water .This kinds and diversites knowledge and their total knowledge file management is very importance for fisheries science.
This freshwater and marine water has a huge number of vertebrate and invertebrate animals and plants. Thair identify and use is vary importance for fisheries and aquaculture .for that their proper file management is play a useful role in fisheries and aquaculture.
If we went to know the total plant and animals this is not possible to proper file management.
Culturable species and there predator knowledge and file management is vary importance for aquaculture .culturable species habitats and their food habit is very importance for successful aquaculture and also importance in breeding season and behavior and high growth rate fish data .There proper management and for fisheries student study documents is very important. So file management is very importance in fisheries science.
This world have numerous kinds and diversity .This kinds and diversity remain in whole world two two third is aquatic ,fresh water and marine water .This kinds and diversites knowledge and their total knowledge file management is very importance for fisheries science.
This freshwater and marine water has a huge number of vertebrate and invertebrate animals and plants. Thair identify and use is vary importance for fisheries and aquaculture .for that their proper file management is play a useful role in fisheries and aquaculture.
If we went to know the total plant and animals this is not possible to proper file management.
Culturable species and there predator knowledge and file management is vary importance for aquaculture .culturable species habitats and their food habit is very importance for successful aquaculture and also importance in breeding season and behavior and high growth rate fish data .There proper management and for fisheries student study documents is very important. So file management is very importance in fisheries science.
This presentation gives a basic introduction to files as a Data Structure. Physical Files and Logical Files are covered. Files as a collection of records and as a stream of bytes are talked about. Basic operations in files are explained. C syntax is given. Types of files are briefly talked about.
COURSE TITLE: SOFTWARE DEVELOPMENT VI
COURSE CODE: VIT 351
TOPICS COVERED:
FILES
FILES I/O STREAM
TYPES OF FILES
DRAWBACKS OF TRADITIONAL METHOD OF DATA STORAGE
CONCEPT OF BUFFER
MODES OF FILE OPENING
END OF FILE
PROCESSORS DIRECTIVES
MACROS
TYPES OF MACROS
DIFFERENCE BETWEEN MACROS AND FUNCTIONS
QUIZ SET 5
This presentation gives a basic introduction to files as a Data Structure. Physical Files and Logical Files are covered. Files as a collection of records and as a stream of bytes are talked about. Basic operations in files are explained. C syntax is given. Types of files are briefly talked about.
COURSE TITLE: SOFTWARE DEVELOPMENT VI
COURSE CODE: VIT 351
TOPICS COVERED:
FILES
FILES I/O STREAM
TYPES OF FILES
DRAWBACKS OF TRADITIONAL METHOD OF DATA STORAGE
CONCEPT OF BUFFER
MODES OF FILE OPENING
END OF FILE
PROCESSORS DIRECTIVES
MACROS
TYPES OF MACROS
DIFFERENCE BETWEEN MACROS AND FUNCTIONS
QUIZ SET 5
Wherever there is a need to handle large volumes of data, it is advantageous to store data on the disks and read whenever necessary. This method employs the concept of files to store data. A file is a place on disk where a group of related data is stored.file handling c programming tutorial
File handling in C involves manipulating files through operations such as opening, reading, writing, and closing. The `<stdio.h>` library provides functions like `fopen`, `fclose`, `fread`, and `fwrite` for these operations. To read from a file, you can use functions like `fscanf` or `fgets`, while `fprintf` and `fputs` are used for writing. It's crucial to check for errors during file operations and close files using `fclose` to ensure proper resource management. Binary file handling is possible with functions like `fwrite` and `fread`. File handling is integral for tasks involving data storage, retrieval, and manipulation in C programs.
At the end of this lecture students should be able to;
Define the C standard functions for managing file input output.
Apply taught concepts for writing programs.
File Operation such as
Reading the file content
Writing the content to the file
Copying the content from one file to another file
Counting the number of character, words and lines of the file
Contents:-
Introduction
What is a File?
High Level I/O Functions
Defining & Opening a File
Closing a File
The getc and putc Functions
The getw and putw Functions
The fprintf and fscanf Functions
Concept of file, Opening and closing of file, Modes, Input/ output function, Random access in file, Printing a file
A file represents a sequence of bytes on the disk where a group of related data is stored. File is created for permanent storage of data. It is a ready made structure.
In C language, we use a structure pointer of file type to declare a file.....
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
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Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
How to Create Map Views in the Odoo 17 ERPCeline George
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How to Make a Field invisible in Odoo 17Celine George
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Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
The Art Pastor's Guide to Sabbath | Steve ThomasonSteve Thomason
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2. A File can be used to store a large volume of persistent data. Like many other
languages 'C' provides following file management functions,
Creation of a file
Opening a file
Reading a file
Writing to a file
Closing a file
3. Following are the most important file management functions available in 'C,'
Function purpose
•fopen () Creating a file or opening an existing file
•fclose () Closing a file
•fprintf () Writing a block of data to a file
•fscanf () Reading a block data from a file
•getc () Reads a single character from a file
•putc () Writes a single character to a file
•getw () Reads an integer from a file
•putw () Writing an integer to a file
•fseek () Sets the position of a file pointer to a specified location
•ftell () Returns the current position of a file pointer
•rewind () Sets the file pointer at the beginning of a file
4. Whenever you want to work with a file, the first step is to create a
file.
A file is nothing but space in a memory where data is stored.
To create a file in a 'C' program following syntax is used,
FILE *fp;
fp = fopen ("file_name", "mode");
In the above syntax, the file is a data structure which is defined in the
standard library.
How to Create a File
5. •fopen is a standard function which is used to open a file.
•If the file is not present on the system, then it is created and then
opened.
•If a file is already present on the system, then it is directly
opened using this function.
•fp is a file pointer which points to the type file.
•Whenever you open or create a file, you have to specify what
you are going to do with the file.
•A file in 'C' programming can be created or opened for
reading/writing purposes.
• A mode is used to specify whether you want to open a file for
any of the below-given purposes.
6. Following are the different types of modes in 'C' programming which can be used while working with a
file.
File Mode Description
r Open a file for reading. If a file is in reading mode, then no data is deleted if a file is already
present on a system.
w Open a file for writing. If a file is in writing mode, then a new file is created if a file doesn't exist
at all. If a file is already present on a system, then all the data inside the file is truncated, and it
is opened for writing purposes.
a Open a file in append mode. If a file is in append mode, then the file is opened. The content
within the file doesn't change.
r+ open for reading and writing from beginning
w+ open for reading and writing, overwriting a file
a+ open for reading and writing, appending to file
In the given syntax, the filename and the mode are specified as strings hence they must always be
enclosed within double quotes.
7. EXAMPLE
#include <stdio.h>
int main()
{
FILE *fp;
fp = fopen ("data.txt", "w");
}
Output:
File is created in the same folder where you have saved your code.
You can specify the path where you want to create your file
#include <stdio.h>
int main() {
FILE *fp;
fp = fopen ("D://data.txt", "w");
}
8. How to Close a file
•One should always close a file whenever the operations on file are over. It means the
contents and links to the file are terminated.
•This prevents accidental damage to the file.
•'C' provides the fclose function to perform file closing operation. The syntax of fclose is
as follows,
fclose (file_pointer);
Example:
FILE *fp;
fp = fopen ("data.txt", "r");
fclose (fp);
9. FILE I/O Operations
When a file opened, we can read data stored in the file or write new data onto it depending on the mode
of opening standard library supports a good number of functions which can be used for performing I/O
operations. These functions are referred to as file I/O functions.
File I/O functions are broadly classified into two types:
1. High level files I/O functions
2. Low level files I/O functions
•High level file I/O functions are basically C standard library functions and are easy to use.
•Most of the C programs handling files use these because of their simple nature.
•Low level file I/O functions are file related system calls of the underlying operating system.
•These are relatively more complex in nature when compared to high level file I/O functions but efficient in
nature.
• fputc() and fgetc()-Character-oriented file I/O functions fputs() and fgets()-String-oriented file I/O
functions
10. High level file I/O functions can be further classified into the following two types:
1. Unformatted file I/O functions
2. Low level files I/O functions
•Unformatted file I/O functions
fputc() and fgetc()-Character-oriented file I/O functions
fputs() and fgets()-String-oriented file I/O functions
• Formatted file I/O functions
fprint() and fscanf()-Mixed data-oriented file I/O functions
11. Command Line ArgumentsIn C it is possible to accept command line arguments.
Command-line arguments are given after the name of a program in command-line operating systems like DOS or Linux, and
are passed in to the program from the operating system.
To establish the data communication between a calling function and a called function.
It is done through arguments; a calling function passes inputs to a called function, which perform required manipulations.
To display the contents of emp.dat, we use the following command:
C:>type emp.dat
here type is the program file name (executable) and emp.dat is the input file, the contents of which are displayed
To make main() of a program take command line arguments, the function header will have the following form:
void main(int argc,char *argv[])
Here, argc and argv [] are the formal arguments, which provide mechanism for collecting the arguments given at command
line when the program is launched for execution.