read usage c

How to use read and write functions in C?
C File Operations
1Creating a new file – fopen() with attributes as “a” or “a+” or “w” or “w+”2Opening an existing file – fopen()3Reading from file – fscanf() or fgets()4Writing to a file – fprintf() or fputs()5Moving to a specific location in a file – fseek(), rewind()6Closing a file – fclose()
What does read () do in C?
The read() function reads data previously written to a file.
If any portion of a regular file prior to the end-of-file has not been written, read() shall return bytes with value 0.
Is read () a system call?
The read function is a system call in Linux used to read data from an open file descriptor into a buffer.
It allows you to retrieve data from files, devices, sockets, pipes, and other input sources.
The scanf() function is a commonly used input function in the C programming language.
It allows you to read input from the user or from a file and store that input in variables of different data types._{6 mar. 2023}

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