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File oparation in c
 

File oparation in c

File oparation in c

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    File oparation in c File oparation in c Presentation Transcript

    • Disclaimer: This presentation is prepared by trainees of baabtra as a part of mentoring program. This is not official document of baabtra –Mentoring Partner Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd
    • Typing Speed: 20 Muhammed shafi shafi3949@gmail.com Shafi breeze Shafi breeze in.linkedin.com/in/profilena me 9961073949
    • TOPIC File operations in C
    • File operations We frequently use files for storing information which can be processed by our programs. In order to store information permanently and retrieve it we need to use files. Files are not only used for data. Our program are also stored in files.
    • • In C we use FILE * to represent a pointer to a file. • fopen is used to open a file. It returns the special • value NULL to indicate that it couldn't open the file.
    • Modes for opening files The second argument of fopen is the mode in which we open the file. There are three • "r" opens a file for reading • "w" creates a file for writing - and writes over all previous contents (deletes the file so be careful!) • "a" opens a file for appending - writing on the end of the file • “rb” read binary file (raw bytes) • “wb” write binary fil
    • Writing to a file using fprintf( ) fprintf( ) works just like printf and sprintf except that its first argument is a file pointer.
    • Reading Data Using fscanf( ) We also read data from a file using fscanf( ).
    • Closing a file We can close a file simply using fclose( ) and the file pointer.
    • Example of File operations
    • THE END Create by Shafi
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