	0	0	1	null
	10	1	0	fprint("lib-fclose-test-a-out.txt","welcome to libc!
")
	20	4	0	fprint("lib-fclose-test-a-out.txt",28," is a perfect number.
")
	30	3	0	fprint("lib-fclose-test-a-out.txt","To thine own self be ",true,".
")
	40	2	0	fclose("lib-fclose-test-a-out.txt")
welcome to libc!
28 is a perfect number.
To thine own self be true.
	50	5	0	system("cat lib-fclose-test-a-out.txt")
