What are the disk input and output functions?
Table of Contents
- 1 What are the disk input and output functions?
- 2 What is file explain various functions used for opening/closing and processing a file in C language?
- 3 What are the I O functions available in C for binary files?
- 4 What is file in C++ explain two methods of opening a file with syntax?
- 5 What is file explain any two file functions with example?
- 6 What is the use of input function?
What are the disk input and output functions?
Creating a new file on the disk. Reading the file stored on the disk. Writing data to the file stored on the disk.
What are the disk input & output functions explain with the help of programs opening/closing and creating of data files?
File Input/Output in C
| Function | description |
|---|---|
| fopen() | create a new file or open a existing file |
| fclose() | closes a file |
| getc() | reads a character from a file |
| putc() | writes a character to a file |
What is file explain various functions used for opening/closing and processing a file in C language?
C provides a number of build-in function to perform basic file operations: fopen() – create a new file or open a existing file. fclose() – close a file. getc() – reads a character from a file.
What are input and output operations in programming?
Input and output, or I/O is the communication between an information processing system, such as a computer, and the outside world, possibly a human or another information processing system. Inputs are the signals or data received by the system and outputs are the signals or data sent from it.
What are the I O functions available in C for binary files?
Binary I/O Functions size_t fread(void *ptr, size_t size_of_elements, size_t number_of_elements, FILE *a_file); size_t fwrite(const void *ptr, size_t size_of_elements, size_t number_of_elements, FILE *a_file); Both of these functions should be used to read or write blocks of memories – usually arrays or structures.
What does the characters R and W mean when writing programs that will make use of files explain with example?
Answer: “r” means “read” and will open a file as input wherein data is to be retrieved. “w” means “write”, and will open a file for output. Previous data that was stored on that file will be erased.
What is file in C++ explain two methods of opening a file with syntax?
And ifstream object is used to open a file for reading purpose only. Following is the standard syntax for open() function, which is a member of fstream, ifstream, and ofstream objects….Opening a File.
| Sr.No | Mode Flag & Description |
|---|---|
| 2 | ios::ate Open a file for output and move the read/write control to the end of the file. |
What are file opening modes explain with example?
14.6 FILE OPENING MODES
| Sr. No | Open mode | Description |
|---|---|---|
| 1 | in | Open for reading |
| 2 | out | Open for writing |
| 3 | ate | Seek to end of file upon original open |
| 4 | app | Append mode |
What is file explain any two file functions with example?
Functions for file handling
| No. | Function | Description |
|---|---|---|
| 1 | fopen() | opens new or existing file |
| 2 | fprintf() | write data into the file |
| 3 | fscanf() | reads data from the file |
| 4 | fputc() | writes a character into the file |
What are the formatted input and output functions explain with examples?
Input output built-in functions in C falls into two categories, namely, formatted input output (I/O) functions and unformatted input output (I/O) functions. printf() and scanf() are examples for formatted input and output functions and getch(), getche(), getchar(), gets(), puts(), putchar() etc.
What is the use of input function?
The input function allows you to ask a user to type some sort of information into the program and to save that information into a variable that the program can process.
What are binary files in C?
Binary files are very similar to arrays of structures, except the structures are in a disk file rather than in an array in memory. You can jump instantly to any structure in the file, which provides random access as in an array. You can change the contents of a structure anywhere in the file at any time.