0 File operation-Data File Handling through C

There are two distinct ways to perform the file operation in C:

1. Low level I/O operation (it uses UNIX system call therefore we won't discuss here)

2. High level I/O operation (it uses function in C's Standard I/O library)

List of I/O function with their operation:

fopen() creates a new file for use or opens an existing file for use. fclose() close a file which has been opened for use. getc() reads a character to a file. putc() writes a character to a line. fprintf() writes a set of data values to a file. fscanf() reads a set of data values from a file. getw() reads an integer from a file. putw() writes an integer to a file. feof() test for an end of file condition.

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