Mumbai University > COMPS > Sem 3 > Data Structures

Marks: 5 M

Year: May 2015

• A file is a collection of records where each record may contain different fields.
• These records may be of same size or different size.
• If the file contains records of various sizes, then it is called variable length records.
• The basic file operations include: Creation, Opening, Searching, Inserting, Deleting, and Updating.

• The various file handling operations in c are:

  a. fopen(): This command is used to open a particular file. The Syntax for it is:

  File *fptr;

  Fptr=fopen(“filename”,”mode”);

  Here fptr is a pointer to the file

  Here filename is name of file and mode can be the mode of opening like

  write(w), read(r), append(a).

  b. fclose(fptr): This command is used to close a file.

  c. getc (): Used to read from the file.(SingleCharacter)

  d. putc(): Used to write into the file. (SingleCharacter)

  e. fprinf(): write multiple data to file.

  f. fscanf(): read multiple data from file.

  g. fputs(): write a string into file.

  h. fgets(): read string from file.

  i. ftell(fptr): returns the current position of file pointer.