File Pointers
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Streams are used to represent different kinds of data flow in C++. There are input streams like ifstream that allow reading from files and output streams like ofstream that allow writing to files. Each file stream has get and put pointers that indicate the current position for reading and writing. Functions like seekg(), tellg(), seekp(), and tellp() can be used to set and retrieve the position of these pointers to allow reading from or writing to arbitrary locations in a file.
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This document discusses file handling in C++. It defines text and binary files, and describes classes like ofstream, ifstream, and fstream that are used for file input/output. It explains how to open, close, read from, and write to files, and describes functions for input/output of single characters and blocks of data. It also covers error handling functions and manipulating file pointers using methods like seekg() and seekp().
Filepointers1 1215104829397318-9
This document discusses file handling in C++. It begins by explaining the differences between main memory and secondary memory (files on storage devices). It then discusses C++ streams and the classes used for file input/output (ifstream, ofstream, fstream). The rest of the document covers various file operations like opening, closing, reading from and writing to files. It also discusses text files versus binary files and sequential versus random file access. File pointers and associated functions like seekg(), tellg(), seekp() and tellp() are explained for navigating within files. An example program demonstrates reading from one file and writing to another.
Filehandling
This document provides an overview of file handling in C++. It discusses different file types like text files and binary files. It introduces classes like ofstream, ifstream, and fstream for file stream operations like opening, closing, reading, and writing to files. It also covers error handling functions and manipulating file pointers using functions like seekg(), seekp(), tellg(), and tellp().
Files in C++.pdf is the notes of cpp for reference
Files in C++ can be accessed using stream classes which provide an interface for input/output operations with files. The key stream classes are fstream, ifstream, and ofstream which allow reading from, writing to, and both reading and writing files. Files can be opened using constructors or the open() function, specifying a file name and open mode. File pointers track the current read/write position and can be manipulated using seekg(), seekp(), tellg(), and tellp() along with positions like ios::beg or ios::cur.
File Handling
This is ppt prsented by me in class in this ppt i include file handling in which i tell us about the types of files
creation of text file in C ++ ,updating a text file in C++ , printing the inforamtion in text file .creation of binary file in C ++ ,updating a binary file in C++ , printing the inforamtion in binary file, text file function and binary file function in c++ , File ponters ,syntax of every thing and use of file pointers and many more.
Data file handling
The document provides an overview of file handling in C++. It discusses key concepts such as streams, file types (text and binary), opening and closing files, file modes, input/output operations, and file pointers. Functions for reading and writing to text files include put(), get(), and getline(). Binary files use write() and read() functions. File pointers can be manipulated using seekg(), seekp(), tellg(), and tellp() to move through files.
Filesinc 130512002619-phpapp01
The document discusses file input/output in C++. It covers the header file fstream.h, stream classes like ifstream and ofstream for file input/output, opening and closing files, reading/writing characters and objects to files, detecting end of file, moving file pointers for random access, and handling errors. Functions like open(), close(), get(), put(), read(), write(), seekg(), seekp(), tellg(), tellp(), eof(), fail(), bad(), good(), and clear() are described.
Working with file(35,45,46)
This document discusses object oriented programming concepts in C++ including file input/output modes, file pointers, reading and writing data to files, and reading/writing class objects to files. Key points covered include:
- Common file I/O modes like append, read/write, binary, and their purposes.
- File pointers (get and put) and how they track read/write locations and can be manipulated.
- Low-level file I/O functions like get(), put(), read(), write() for single characters and blocks.
- An example of reading/writing a class object to a file by writing/reading the entire object as a block.
Filehandlinging cp2
This document discusses file handling in C++. It begins by explaining that files allow data to be stored permanently on secondary storage devices like hard disks, unlike variables in memory. It then covers key topics like:
- The different types of files, such as text files containing readable characters and binary files containing raw data.
- Classes used for file input/output like ifstream, ofstream, and fstream.
- Opening, closing, reading from, and writing to files using functions like open(), close(), get(), put(), seekg(), tellg(), seekp(), and tellp().
- File pointers that track read/write positions and functions to manipulate them.
- Examples of creating
Data file handling in python reading & writing methods
This document discusses various methods for reading and writing files in Python. It describes readline(), readlines(), and read() methods for reading files line-by-line or in full. It also covers write() and writelines() methods for writing strings or lists to files, and discusses opening files in different modes and manipulating the file pointer position. Standard input, output, and error streams are also briefly explained.
Data file handling in python reading & writing methods
This document discusses various methods for reading and writing files in Python. It describes readline(), readlines(), and read() methods for reading files line-by-line or in full. It also covers write() and writelines() methods for writing strings or lists to files, and discusses opening files in different modes and manipulating the file pointer position. Standard input, output, and error streams are also briefly explained.
Basics of files and its functions with example
The document discusses input/output files in C++. It covers key concepts like streams, predefined console streams, file modes, and file pointers. Binary file operations like get(), put(), read(), write(), and flush() are also summarized for reading and writing bytes from files. The main steps for file I/O in C++ are to declare a file name variable, associate it with a disk file, open the file, use the file for input/output, and close the file.
Files and streams
The document discusses file input and output streams in C++. It covers key topics like:
- Opening files using constructors and the open() function
- Using input and output streams like ifstream and ofstream to read from and write to files
- Controlling file pointers using functions like seekg(), seekp(), tellg(), and tellp()
- Performing sequential and random access file I/O using functions like put(), get(), read(), and write()
- Handling errors during file operations using functions in the ios class like fail(), eof(), bad(), and good()
File handling
File handling involves text files and binary files. Text files use delimiters like EOL to separate lines while binary files store data in memory format without delimiters. Common stream classes for file input/output are ifstream for input, ofstream for output, and fstream for both. Files are opened using stream objects and functions like open(), get(), put(), read(), write() are used for input/output along with close() to finish. Stream pointers track reading/writing positions and can be manipulated with functions like seekg() and seekp().
working file handling in cpp overview
The document discusses file input and output streams in C++. It introduces the different stream classes - ifstream, ofstream and fstream that are used for file operations. It explains how to open and close files using constructor and open() member function. It describes sequential input/output operations using functions like put(), get(), write() and read(). It also covers concepts like file pointers, seek functions and detecting end of file. The document is a chapter from a book that provides an overview of file I/O in C++.
7 Data File Handling
The document provides information about file pointers in C++. It states that a file pointer indicates the position in a file being accessed by a program. File pointers allow programs to move around within a file to read or write data at different locations. Some key functions that manipulate file pointers are seekg(), tellg(), seekp(), and tellp(). These functions respectively allow seeking to a particular location in a file for reading or writing, and returning the current file position. Precise control over file pointers is important when working with random access file I/O in C++.
Managing,working with files
This document discusses C++ stream classes and file input/output. It covers the key stream classes like iostream, istream, ostream and their functions. It also discusses file classes like ifstream, ofstream and fstream that are used for file input/output. It provides examples of reading from and writing to files using these classes and their functions like open(), get(), put() etc. It mentions how file pointers are used to manipulate file positions for input/output operations.
Managing console i/o operation,working with files
This document discusses C++ stream classes and file input/output. It covers the key stream classes like istream, ostream and iostream. It describes how to use stream manipulators and member functions to format console I/O. It also covers file streams like ifstream, ofstream and fstream for reading from and writing to files. Functions like open(), get(), put(), read(), write() are described for file I/O operations. Common file I/O tasks like displaying, modifying and deleting file contents are mentioned.
Similar to File Pointers (20)
Files in C++.pdf is the notes of cpp for reference
Files in C++.pdf is the notes of cpp for reference
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Data file handling in python reading & writing methods
Data file handling in python reading & writing methods
Data file handling in python reading & writing methods
Data file handling in python reading & writing methods
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The document summarizes the annual computer symposium "Edge 2010" held by KHMS. Over 1000 students from 43 schools participated in primary, junior, and senior level events like quizzes, programming, group discussions, and gaming. Chief guest Mrs. Sheetal Sharma inaugurated the event with a lamp lighting ceremony. Students competed in events like ROBO story, C++ programming, audio editing, and tech attire quiz. DAV ShresthaVihar was announced as the overall winner. The symposium concluded with the release of a computer magazine and prize distribution for the winners.
Story 1
A blind boy sat with a hat asking for help, which only had a few coins. A man dropped coins in, then changed the boy's sign to say "Today is a beautiful day and I cannot see it." More people then donated to the boy. The man later confirmed he changed the sign to convey the same message differently, that people should feel lucky not to be blind. The moral is to think creatively and positively to help others in a wise way.
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robotics workshop Aug.09
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