std::memchr

 

C++

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实用工具库

字符串库

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算法库

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正则表达式库 （C++11）

原子操作库 （C++11）

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字符串库

null结尾的字符串 Original: Null-terminated strings The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

字节的字符串

多字节字符串

宽字符串

类 Original: Classes The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

basic_string

char_traits

 

NULL结尾的字节串

功能 Original: Functions The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
字符操作 Original: Character manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
isalnum isalpha islower isupper isdigit isxdigit isblank （C++11）	iscntrl isgraph isspace isprint ispunct tolower toupper
转换为数字格式 Original: Conversions to numeric formats The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
atof atoi atol atoll strtol strtoll	strtoul strtoull strtof strtod strtold
字符串操作 Original: String manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strcpy
strncpy
strcat
strncat
strxfrm
字符串检查 Original: String examination The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strlen strcmp strncmp strcoll strchr strrchr	strspn strcspn strpbrk strstr strtok
内存操作 Original: Memory manipulation The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
memchr
memcmp
memset
memcpy
memmove
杂项 Original: Miscellaneous The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
strerror

 

Defined in header <cstring>
const void* memchr( const void* ptr, int ch, std::size_t count );
void* memchr(       void* ptr, int ch, std::size_t count );

。 ch，并找到该值在第一次出现的的初始unsigned char字符（每个解释为count）的对象所指向的unsigned char转换ptr.

Original:

Converts ch to unsigned char and locates the first occurrence of that value in the initial count characters (each interpreted as unsigned char) of the object pointed to by ptr.

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。参数。

ptr	-	。要检查的对象的指针。 Original: pointer to the object to be examined The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
ch	-	。搜索字符。 Original: character to search for The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
count	-	。检查的字符数。 Original: number of characters to examine The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

===。 返回值。===

。如果没有这样的字符的指针的位置的字符，或NULL发现.

Original:

Pointer to the location of the character, or NULL if no such character is found.

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。另请参阅。

strchr	找到第一个出现的字符 Original: finds the first occurrence of a character The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数）
find find_if find_if_not （C++11）	找到的第一个元素，满足特定的标准 Original: finds the first element satisfying specific criteria The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数模板）
C documentation for memchr