memchr

 

C

语言

类型的支持

动态内存管理

错误处理

程序实用工具

日期和时间工具

字符串库

算法

数值计算

输入/输出的支持

本地化的支持

线程的支持 （C11）

原子操作 （C11）

 

字符串库

字节的字符串

多字节字符串

宽字符串

 

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 <string.h>
const void* memchr( const void* ptr, int ch, size_t count );
void* memchr(       void* ptr, int ch, 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）
C++ documentation for memchr