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c语言库函数 字符串
Mostly, every C compiler provides a set of useful library functions for handling strings. Here is a list of more commonly used functions with their uses:
通常，每个C编译器都会提供一组有用的库函数来处理字符串。 这是更常用的功能及其用途的列表：
| Function | Use |
|---|---|
| strlen | To find length of a string |
| strlwr | To convert all characters of a string to lowercase |
| strupr | To convert all characters of a string to uppercase |
| strcpy | To copy one string into another |
| strncpy | To copy first n characters of a string into another |
| strdup | To duplicate a string |
| strrev | To reverse a string |
| strcat | To append one string at the end of another string |
| strncat | To append first n characters of a string at the end of another |
| strcmp | To compare two strings |
| strncmp | To compare first n characters of two strings |
| strcmpi | To compare two strings without regarding the case(“I” denotes the func. Ignores case) |
| stricmp | Similar to strcmpi |
| strnicmp | To compare first n characters of two strings without regarding case |
| strchr | To find first occurrence of a given ‘character’ in a string |
| strrchr | To find last occurrence of a given ‘character’ in a string |
| strstr | To find first occurrence of a given ‘string’ in another string |
| strset | Sets all characters of a string to a given character |
| strnset | Sets first n characters of a string to a given character |
| 功能 | 用 |
|---|---|
| len | 查找字符串的长度 |
| Strlwr | 将字符串的所有字符转换为小写 |
| Struts | 将字符串的所有字符转换为大写 |
| strcpy | 将一个字符串复制到另一个 |
| 结构 | 将字符串的前n个字符复制到另一个 |
| strdup | 复制字符串 |
| 施特雷夫 | 反转字符串 |
| strcat | 在另一个字符串的末尾附加一个字符串 |
| Strncat | 将字符串的前n个字符附加在另一个字符的末尾 |
| strcmp | 比较两个字符串 |
| strncmp | 比较两个字符串的前n个字符 |
| strcmpi | 比较两个字符串时不考虑大小写(“ I”表示函数，忽略大小写) |
| tric | 类似于strcmpi |
| Strnicmp | 比较两个字符串的前n个字符而不考虑大小写 |
| strchr | 查找字符串中给定“字符”的首次出现 |
| strrchr | 查找字符串中给定“字符”的最后一次出现 |
| strstr | 查找另一个字符串中给定“字符串”的首次出现 |
| strset | 将字符串的所有字符设置为给定字符 |
| 结构集 | 将字符串的前n个字符设置为给定字符 |
翻译自:
c语言库函数 字符串
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