C Programming Code Examples

C > File Operations Code Examples

Do not give the have the same sourcefile and destinationfile, encrypting or decrypting, bug will be worked out as I get more interested in file encryption. Decrypt the file with the same

Generate a unique temporary filename: tmpnam

Get the next character from a stream: how to use fgetc

How to read/ write (I/O) Strings in Files - fgets & fputs

How to use extern in C programming language

Macro in different file

Menu Driven File Attribute Changing Utility

Messing about with formatted file I/O

Open a file and read its content using fgetc

Open a temporary file: how to use tmpfile

Print error message: how to use perror

Program to write even and odd integers into different files

Read and write array into file

Read formatted data from a stream: how to use fscanf

C Programming Sample Reading the Files

To read the file in C Language, we must open it first using any of the mode, for example if you only want to read the file then open it in "r" mode. Based on the mode selected during

Reads Strings from a File in Reverse Order

Program code to find out how many strings there are. Read string length. Check buffer is large enough and increase if necessary. Now get the position for the beginning of each...

Reads files and displays them on the screen: use EOF

Redirect the printf to file

Reopen a stream with a different file and mode: how to use freopen

Reposition file pointer to a saved location: how to use fsetpos

Reposition stream's pointer indicator: how to use fseek

Reset the file reader pointer

Return the current position in a stream: how to use ftell

Save string into file: fputs function

Save text content into a file

Search a set of numbers

Set the file pointer to the beginning of a stream: how to use rewind

setvbuf: sets the buffer for stream to be buffer, with a size of 'size_t size'

strerror(errno) function - in C programming language

Substitutes spaces for tabs in a text file and supplies error checking

tmpfile: opens a temporary binary file for read/write operations and returns a pointer to the stream

Use fprintf function to save

Verify the user input and display file content

Write a block of data to a stream: how to use fwrite

Write and read the entire array in one step

Write character to stream: how to use fputc

Write character to stream: how to use putc

write non string content

Write some non-character data to a disk file and read it back

Write string to a stream: how to use fputs

Write structure into file in C Programming

The function adds the relatiuve addres to the index for a key. C function writes a record to the file. Sets the relative address for the next record to be the value of current file position

Writing String to a File in C Programming

Str - str represents the array, in which string is stored. Fpw - FILE pointer to the output file, in which record needs to be written and opening the file FILEW.TXT in "w" mode for

C Programming Writing a Character to file

In C to write the file, we must open the file in a mode that supports writing. For example, if you open a file in "r" mode, you won't be able to write the file as "r" is read only mode that

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