contributed by < garrod1227 >(網路旁聽)
實驗環境
$ uname -a
Linux AbcArchLinux 5.16.10-arch1-1 #1 SMP PREEMPT Wed, 16 Feb 2022 19:35:18 +0000 x86_64 GNU/Linux
$ gcc --version
gcc (GCC) 11.2.0
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This is free software; see the source for copying conditions. There is NO