'Stream object' presentation slideshows

File Operations in C++

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Today’s Objectives

19-Jul-2006. Today’s Objectives. Announcements Homework #5 is due next Monday, July 24. Since this date is so close to the end of the semester, no late assignments will be accepted and email will NOT be accepted! Quiz #4 File Processing (Ch. 17) Files and streams Reading from files

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C/ C++ Basics (VII) Str eams and File I/O

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CIS 4930 Application Development Using C++ Dr. Kun Suk Kim CISE Department, University of Florida

CIS 4930 Application Development Using C++ Dr. Kun Suk Kim CISE Department, University of Florida. Course Introduction. Course Description. This course discusses issues that arise when C++ is used in the design and implementation of software systems.

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Chapter 15

Chapter 15. Objectives. You should be able to describe: I/O File Stream Objects and Methods Reading and Writing Character-Based Files Exceptions and File Checking Random File Access File Streams as Function Arguments Common Programming Errors. I/O File Stream Objects and Methods.

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File input and output

File input and output. Interactive vs. file I/O. All of the programs we have seen or written thus far have assumed interaction with a user, who types in data at a keyboard and sees output on a screen We can also receive data from, or send data to, the secondary storage devices on the computer

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File I/O

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File I/O

File I/O. Static void Main( ) { . . . . . . }. data. Topics. I/O Streams Reading and Writing Text Files Formatting Text Files Handling Stream Errors File Pointers. Objectives. After completing this topic, students should be able to:.

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File Processing

17. File Processing. OBJECTIVES. In this chapter you will learn: To create, read, write and update files. Sequential file processing. Random-access file processing. To use high-performance unformatted I/O operations. The differences between formatted-data and raw-data file processing.

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File Handling

File Handling. A program typically involves either or both the following kinds of data communication: Data transfer between the console unit and the program . Data transfer between the program and disk file. Classes For File Stream Operations. Opening And Closing Of A File.

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CSIS 123A Lecture 8

CSIS 123A Lecture 8. Streams & File IO. Introduction. Streams Special objects Deliver program input and output File I/O Uses inheritance Covered Later File I/O very useful, so covered here. Streams. A flow of characters Input stream Flow into program Can come from keyboard

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Working with Files

Working with Files. File Input and Output Stream. C++ uses file streams as an interface between the programs and the data files. Input Stream. Data input. Read Data. Disk Files. Program. Output Stream. Write Data. Data output. File Input and Output Stream.

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Data Storage, Continued

Data Storage, Continued. Review of FileConnection. Can read data that other apps have written to file system A traditional file system javax.microedition.io.file package Use Connector class to create the actual connection. Review Connector Class. javax.microedition.io.Connector

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Files

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File I/O Finished off

File I/O Finished off. Colin Cherry standing in for Dr. Lin. What happens if your input is bigger than your character array?. char arr[10]; cin >> arr; The characters are written to memory starting at the spot pointed to by arr

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Advanced File Operations

Advanced File Operations. Chapter 12. File Operations. File: a set of data stored on a computer, often on a disk drive Programs can read from, write to files. Using Files. Requires fstream header file use ifstream data type for input files use ofstream data type for output files

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Advanced File Operations

Advanced File Operations. Chapter 12. File Operations. File: a set of data stored on a computer, often on a disk drive Programs can read from, write to files. Using Files. Requires fstream header file use ifstream data type for input files use ofstream data type for output files

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Writing to a Text File

Writing to a Text File. When a text file is opened in this way, a FileNotFoundException can be thrown In this context it actually means that the file could not be created This type of exception can also be thrown when a program attempts to open a file for reading and there is no such file

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COMP 102 Programming Fundamentals I

COMP 102 Programming Fundamentals I. Presented by : Timture Choi. File I/O. File External collection of data Provided input to a program Stored output from a program Stored on secondary storage permanently Must be Opened before used Closed after used File I/O

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Streams and Basic File IO

Streams and Basic File IO. Terms to Know. Stream Input Stream Output Stream Reading Writing ifstream ofstream fstream. Connecting to a file External file name Close Object Member function Class Dot operator Calling object fail. Basic IO Terms. A stream is a flow of data

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