What are the differences between system calls and library calls?
System calls are interfaces for user programs to request services from the kernel, while library calls are functions provided by libraries that may or may not use system calls.
Can you give me an example of a system call?
Sure! An example of a system call is open()
, which is used to open a file in the operating system.
And what about a library call?
An example of a library call is printf()
in C, which is used to print output to the console. It may use system calls internally.
Why would a programmer choose to use library calls instead of system calls?
Programmers often use library calls for convenience and abstraction, as they simplify complex operations and improve code readability.
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