21⟩ In the output of this program, the string "/* Linux */" will be added at the ____ of the source file. #include<stdio.h> #include<stdlib.h> #include<fcntl.h> int main() { int fd; fd = open("san.c",O_RDWR|O_APPEND); write(fd,"/* Linux */",11); return 0; } a) end b) beginning c) second line d) third line
a) end
Explanation:
The write system call writes at the end of the file because the file is opened with O_APPEND flag.
Output:
[root@localhost google]# gcc -o san san.c
[root@localhost google]# ./san
[root@localhost google]# vim san.c
[root@localhost google]#
