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c语言：9、main函数中的return
2022-07-27 16:47:00 【兔头哥哥】
在c语言中main函数的return 0;对应的是执行正确
例如执行下方命令
linux体系系统中，使用echo $?若结果不是0，则表示上个命令执行失败了，会返回一个错误码，上图中的错误码为154
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