Libcall with Syscall
Question Text
Which of the following library calls will for sure invoke a system call?
Question Answers
fopen()
fwrite()
printf()
strcpy()
Feedback
fopen()
requires opening a file and access to the operating system (for filesystem access).
The others may not require a system call (strcpy()
) or may use buffering to delay the invocation of a system call (fwrite()
, printf()
).