Skip to main content

What is Data Files in C programming?

By
               The input output functions like printf(), scanf(), getchar(), putchar(), gets(), puts() are known as console oriented I/O functions which always use keyboard and computer screen as the target place. While using these library functions, the entire data is lost when either the program is terminated or the computer is turned off. Again, it becomes cumbersome and time consuming to handle large volume of data through keyboard. These problems invite concept of data files in which data can be stored on the disks and read whenever necessary, without destroying data.
                     A file is a place on the disk where a group of related data is stored. The data file allows us to store information permanently and to access and alter that information whenever necessary. Programming language C has various library functions for creating and processing data files. Mainly, there are two types of data files, one is stream oriented or standard or high level and another is system oriented or low level data files. In standard data files, the available library functions do their own buffer management whereas the programmer should do it explicitly in the case of system oriented files. Thus, system oriented data files are generally easier to work with and are therefore more commonly used.
                     The standard data files are again subdivided into text files and binary files. The text files consist of consecutive characters and these characters can be interpreted as individual data item. The binary files organize data into blocks containing contiguous bytes of information.
Labels:

Comments

Post a Comment

Popular posts from this blog

What is manipulator in C++?

By
Answer: Manipulators are special functions that can be included in the I/O statement to alter the format parameters of a stream. Table-2 shows some important manipulator functions that are frequently used. To access these manipulators, the file < iomanip.h > should be included in program.                               Table-2               Manipulators                                                    Equivalent ios function               set...
Post a Comment
Read more

Database Management System(DBMS)

By
Data and Information  Data is an unprocessed raw fact which does  not give complete meaning about any object,person, entity etc. But when various inter-related data arranged in a row, it gives a complete meaning which is referred to as information. For Example: ID Name Address Program 1101 Ram Shrestha Biratnagar BScIT         is information of a specific person. Database Database is a repository(storage) for the organized collection of related information  of data items. It Consist of meaningful arrangement of data, relationship, constraints, schema etc. In modern days we define database as a computerized record-keeping system used to store information and allows users to retrieve and update these information on their request. Some example of databases are telephone directory, data of SLC result, student and employee records etc. Database Management System(DBMS) Database is the softw...
Post a Comment
Read more

What is Java Applets?

By
An applet is a special kind of Java program that is designed to be transmitted over the Internet and automatically executed by a Java-compatible web browser. Furthermore, an applet is downloaded on demand, without further interaction with the user. If the user clicks a link that contains an applet, the applet will be automatically downloaded and run in the browser. Applets are intended to be small programs. They are typically used to display data provided by the server, handle user input, or provide simple functions, such as a loan calculator, that execute locally, rather than on the server. In essence, the applet allows some functionality to be moved from the server to the client.
Post a Comment
Read more