#import &UIKit/UIKit.h& 和 #import &UIKit.h&有什么区别？_问答_ThinkSAAS
#import &UIKit/UIKit.h& 和 #import &UIKit.h&有什么区别？
#import &UIKit/UIKit.h& 和 #import &UIKit.h&有什么区别？
为什么第二行就报红（找不到文件）呢？
//会搜索系统库地址和build setting 里 Framework Search Paths 的路径
#import &UIKit/UIKit.h&
//会搜索当前工程目录和build setting 里 Header Search Patchs 的路径
#import"UIKit.h"
不用谢，请叫我雷锋，点我头像有惊喜噢 ^_^
用&&这个一般是用来导入系统库的
而""这个使用来导入自己定义的类
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#include&iostream.h&classA{ (inti){x=i;}voidfun1(intj){x+=j;cout&&"fun1:"&&x&&en...
因为Y是静态的不变
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arpa/inet.h - definitions for internet operations
#ilude &arpa/inet.h&
DESCRIPTION
shall be defin as described in
&netinet/in.h& .
The in_addr sucture shall be defined as described in &netinet/in.h& .
The INET_ADDRSTRLEN
and INET6_ADDRSTRLEN
macros shall be defined as
described in &netinet/in.h& .
The following shall either be declared as functions, defined as macros,
prototypes shall be
uint32_t htonl(uint32_t);
uint16_t htons(uint16_t);
uint32_t ntohl(uint32_t);
uint16_t ntohs(uint16_t);
The uint32_t and uint16_t
&inttypes.h& .
The following shall be declared as functions and may ao be defined as
macros. Function prototypes shall be provided.
inet_addr(const char *);
*inet_ntoa(struct in_addr);
const char
*inet_ntop(int, const void *restrict, char *restrict,
socklen_t);
inet_pton(int, const char *restrict, void *restrict);
Inclusion of the &arpa/inet.h& header may also make visible all symbols
from &netinet/in.h& and &inttypes.h&.
The following sections are infoative.
APPLICATION USAGE
FUTURE DIRECTIONS
&netinet/in.h&
&inttypes.h&
Interfaces
IEEE Std 1, htonl(), inet_addr()
Portions of this tt are reprinted and reproced in
electronic
from IEEE Std 03 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX),
Specifiions
by the Institute of
Electrical and Electronics Engineers, Inc and The Open
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group
referee document. The original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
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