C 字符串的比较运算符
我在查找比较 C 字符串的信息时遇到一些困难。我知道与 C++ 不同，C 不支持运算符重载，所以我想知道是否有任何方法可以检查一个字符串是否大于/小于另一个字符串（例如 str1 > str2）？
提前感谢您的回复。老实说，这是我第一次真正不得不问问题，因为我找不到相关的帖子。
I am having some difficulty locating information of comparing C strings. I understand that unlike C++, C does not support operator overloading, so I'm wondering if there is any way to check if one string is greater/less than another (e.g. str1 > str2)?
Thanks ahead of time for your responses. This is honestly one of the first times I have actually had to ask a question because I could not find a related post.
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有几种，每种都有不同的用途（现在省略宽字符变体）。
strcmp– 逐个字符地比较两个字符串（使用 C 语言中的字符串相等概念或不 - 这不需要与人类的思维方式一致 - 请参阅strcoll）。有一个变体用于仅比较最多前 n 个字符，strncmp。strcasecmp– 比较两个字符串，忽略大小写。有一个变体用于仅比较最多前 n 个字符，strncasecmp。strcoll– 比较两个字符串，观察当前设置的区域设置（这就是为什么它被称为排序规则，在这种情况下不进行比较）。如果您希望ss和ß对于德国受众来说是相等的，那么您应该使用这个。在您可能
用语言编写的地方，您必须
用 C 编写。本质上，您将两个操作数移至函数调用中，保留比较运算符并与
0进行比较。There are several, each serving different purposes (omitting wide character variants for now).
strcmp– compares two strings, character by character (with the C notion of what strings are equal or not – that doesn't need to coincide with how humans think – seestrcoll). There's a variant for comparing only the first at most n characters,strncmp.strcasecmp– compares two strings, ignoring case. There's a variant for comparing only the first at most n characters,strncasecmp.strcoll– compares two strings, observing the currently set locale (which is why it's called collation, not comparing in this case). If you wantssandßto compare equal for a German audience, then this is what you should use.Where you might write
in a language, you have to write
in C. Essentially you move both operands into the function call, retain the comparison operator and compare with
0instead.在 C 中使用 strcmp()。
例如，如果要比较两个字符串 s1 和 s2，则
strcmp(s1,s2) 如果相等则返回 0，如果 s1 大于 s2，则返回正整数，如果 s1 小于 s2，则返回负整数比 s2.
Use strcmp() in C.
for example if you want to compare two strings s1 and s2 then,
strcmp(s1,s2) will return 0 if they are equal, positive integer if s1 is greater than s2 and negative integer if s1 is lesser than s2.