FAQ

What are file operations in C?

What are file operations in C?

Different operations that can be performed on a file are:

  • Creation of a new file (fopen with attributes as “a” or “a+” or “w” or “w++”)
  • Opening an existing file (fopen)
  • Reading from file (fscanf or fgets)
  • Writing to a file (fprintf or fputs)
  • Moving to a specific location in a file (fseek, rewind)
  • Closing a file (fclose)

What are the file operations explain with example?

File Operations A file is an abstract data type. For defining a file properly, we need to consider the operations that can be performed on files. The operating system can provide system calls to create, write, read, reposition, delete, and truncate files. There are six basic file operations within an Operating system.

How do you process a file in C?

Steps for Processing a File

  1. Declare a file pointer variable.
  2. Open a file using fopen() function.
  3. Process the file using the suitable function.
  4. Close the file using fclose() function.

How do you use file operations?

File Operations

  1. Creating a file. Two steps are necessary to create a file.
  2. Writing a file. To write a file, we make a system call specifying both the name of the file and the information to be written to the file.
  3. Reading a file.
  4. Repositioning within a file.
  5. Deleting a file.
  6. Truncating a file.

Which are the file operations?

Operations on the File

  • Open operation: This operation is the common operation performed on the file.
  • Write operation: This operation is used to write the information into a file.
  • Read operation:
  • Re-position or Seek operation:
  • Delete operation:
  • Truncate operation:
  • Close operation:
  • Append operation:

How do you declare a file?

File I/O in C

  1. Create a variable of type “FILE*”.
  2. Open the file using the “fopen” function and assign the “file” to the variable.
  3. Check to make sure the file was successfully opened by checking to see if the variable == NULL.
  4. Use the fprintf or fscanf functions to write/read from the file.

What is data type of file pointer?

File pointer is a pointer which is used to handle and keep track on the files being accessed. A new data type called “FILE” is used to declare file pointer. This data type is defined in stdio. h file. Once file is opened, file pointer can be used to perform I/O operations on the file.

What are the types of files?

6 Different Types of Files and How to Use Them

  • JPEG (Joint Photographic Experts Group)
  • PNG (Portable Network Graphics)
  • GIF (Graphics Interchange Format)
  • PDF (Portable Document Format)
  • SVG (Scalable Vector Graphics)
  • MP4 (Moving Picture Experts Group)