How do you read a file and write to another file in C?

Make a variable with the type "FILE*." Using the "fopen" function, open the file and assign "file" to the variable. Check to see if the variable == NULL indicates that the file was successfully opened. To write or read from the file, use the fprintf or fscanf functions.

What is read and write in C?

Creating a new file: Open a file in read mode with the r command. w - in write mode, opens or creates a text file. a - adds a new line to a file in append mode. r+ - opens a file in read-only and write-only mode. a+ - opens a file in read-only and write-only modes.

What is reading a file in C?

Reading a Document: The most basic function for reading a single character from a file is int fgetc(FILE * fp); The fgetc() function reads a character from the input file specified by fp. The character read is returned as the return value, or EOF if an error occurs.

How do you read from a text file in C?

Three steps are required to read from or write to simple text files: Using fopen, open the file. Use fscanf to read from the file or fprintf to write to it. fclose is a command that closes a file.

Course Content

Introduction to C Programming

24m 32s

How to use LearnVern

3m 20s

Quiz : Introduction to C

Setting up C Environment

17m 24s

First Program in C

25m 16s

Assignment : Setting up C & First Program on C

3m 17s

Quiz : Setting up C & First Program on C

15m

Basic Syntax

21m 44s

Data Types in C Programming

26m 19s

Variables in C Programming

20m 35s

Storage Classes in C Programming

28m 23s

printf() and scanf() Functions

22m 56s

Constants in C Programming

18m 8s

Assignment : Structure of C

3m 50s

Quiz : Structure of C

30m

Operators in C Programming

23m 18s

Assignment : Operators in C "

7m 38s

Quiz : Operators in C

16m

Decision Making- If Statement, If-else Statement

19m 5s

Decision Making - Nested If, Switch Statement, Nested Switch Statement

26m 7s

Entry Contolled Loops - For Loop, While Loop

29m 25s

Exit Controlled Loops - Do While Loop, Nested Loop

21m 9s

Break, Continue and Goto Statement

14m 54s

Assignment : Decision making and Flow Control

3m 20s

Quiz : Decision making and Flow Control

15m

Introduction to User Defined Functions

9m 28s

User Defined Functions -Function Definition, Function Declaration and Function Call

20m 55s

User Defined Functions - Functions and Parameters

19m 39s

User Defined Functions- Types of Parameters

20m 18s

Scope of a Variable

8m 3s

Assignment : Working with User Defined Functions

9m 4s

Quiz : Working with User Defined Functions

12m

Declaration & Initialization of Arrays

17m 30s

Accessing Array Elements

12m 33s

Types of Arrays

7m 27s

2D Arrays

11m

Multidimensional Arrays

25m 9s

Introduction to Pointers

16m 36s

Pointers with Functions

34m 18s

Pointer Types: Null Pointer, Wide Pointer, Void Pointer

24m 3s

Pointer Arithmetic

23m 28s

Array of Pointers

9m 58s

Working with Strings

17m 10s

Introduction to Structures

9m 47s

Basic Structure Example

10m 32s

Nested Structures, Array of Structures

27m 24s

Union in C Programming

12m 27s

Assignment : Derived Datatypes Part 1

5m 24s

Assignment : Derived Datatypes Part 2

14m 45s

Quiz : Derived Datatypes

12m

Typedef Function in C Programming

10m 7s

Quiz : Typedef Function

Overview of File Handling

15m 2s