使用,而不是argv的“__progname”[0] [英] Using '__progname' instead of argv[0]
问题描述
在C / Unix环境下工作,我在,我看到使用__progname代替的argv [0],使用()消息部分开发商。有一些优势呢?什么__progname和argv之间的差[0]。它是便携式?
In the C / Unix environment I work in, I see some developers using __progname instead of argv[0] for usage() messages. Is there some advantage to this? What's the difference between __progname and argv[0]. Is it portable?
推荐答案
__的progname
不标准,因此不便于携带,preFER 的argv [0]
。我想 __的progname
可以查找字符串资源获取是一种不依赖于你运行它作为文件名的名称。但的argv [0]
会给你他们的的名称实际上的运行它作为我会找到更多有用的。
__progname
isn't standard and therefore not portable, prefer argv[0]
. I suppose __progname
could lookup a string resource to get the name which isn't dependent on the filename you ran it as. But argv[0]
will give you the name they actually ran it as which I would find more useful.
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