File Handling in CFi

File Dealing with

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File Dealing with in C

 

File Dealing with idea in C language is used for retailer a knowledge completely in laptop. Utilizing this idea we are able to retailer our information in Secondary reminiscence (Exhausting disk). All recordsdata associated perform can be found in stdio.h header file.

Learn how to obtain File Dealing with in C

For reaching file dealing with in C we’d like comply with following steps

• Naming a file
• Opening a file
• Studying information from file
• Writing information into file
• Closing a file

Capabilities use in File Dealing with in C

S.No	Perform	Operation
1	fopen()	To create a file
2	fclose()	To shut an present file
3	getc()	Learn a personality from a file
4	putc()	Write a personality in file
5	fprintf()	To write down set of information in file
6	fscanf()	To learn set of information from file.
5	getw()	To learn an integer from a file
6	putw()	To write down an integer in file

Defining and Opening a File

Information construction of file is outlined as FILE in the usual I/O perform. So all recordsdata needs to be declared as kind FILE.

Earlier than opening any file we have to specify for which goal we open file, for instance file open for write or learn goal.

Right here fp declare a variable as a pointer to the info kind FILE.

Closing a File

A file have to be shut after completion of all operation associated to file. For closing file we’d like fclose() perform.

File Opening mode

S.No	Mode	That means	Function
1	r	Studying	Open the file for studying solely.
2	w	Writing	Open the file for writing solely.
3	a	Appending	Open the file for appending (or including) information to it.
4	r+	Studying + Writing	New information is written at first override present information.
5	w+	Writing + Studying	Override present information.
6	a+	Studying + Appending	To new information is appended on the finish of file.

Enter/Output Operation on recordsdata

To carry out Enter/Output Operation on recordsdata we’d like under capabilities.

S.No	Perform	Operation	Syntax
1	getc()	Learn a personality from a file	getc( fp)
2	putc()	Write a personality in file	putc(c, fp)
3	fprintf()	To write down set of information in file	fprintf(fp, “management string”, checklist)
4	fscanf()	To learn set of information from file.	fscanf(fp, “management string”, checklist)
5	getw()	To learn an integer from a file.	getw(fp)
6	putw()	To write down an integer in file.	putw(integer, fp)

Write information in File