toupper

 

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 <ctype.h>
int toupper( int ch );

将指定的字符转换为大写。

参数

ch

-

要转换的字符

返回值

与ch对应的大写字符。如果当前的C语言区域设置中没有对应大写，则返回原ch字符。

另请参阅

tolower	字符转换为小写 Original: converts a character to lowercase The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函数）
towupper	一个宽字符转换为大写 Original: converts a wide character to uppercase 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 toupper