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stdbool.h C99标准杂谈 - c++1y / stl - 清泛IT社区，为创新赋能！
...到头文件？？？
bool 是C++中的关键字，C中不支持
所以C99标准中引入了头文件 stdbool.h，包含了四个用于布尔型的预定义宏：
#define true 1
#define false 0
#define bool _Bool
typdef int _Bool
但是很遗憾，Visual C++不支持C99，至少现在来看...
Why does C++11 not support designated initializer lists as C99? [closed]
...c1/sc22/wg21/docs/papers/2017/p0329r4.pdf
This brings limited support for c99's Designated Initializers. This limitation is described as follows by C.1.7[diff.decl].4, given:
struct A { int x, y; };
struct B { struct A a; };
The following Designated Initializations, which are valid in C, are rest...
snprintf and Visual Studio 2010
...p:
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf c99_snprintf
#define vsnprintf c99_vsnprintf
__inline int c99_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap)
{
int count = -1;
if (size != 0)
count = _vsnprintf_s(outBuf, size, _TRUNCATE...
在线服务的黑天鹅 - 资讯 - 清泛网 - 专注C/C++及内核技术
...用百分比来表示。在线服务通常看到最多的是以下3种
99.9%，服务中断时间：525.6分钟/年
99.99%，服务中断时间：52.56分钟/年
99.999%，服务中断时间：5.256分钟/年
当一个系统有大量用户使用之后，对系统可用性有较高要求，...
Is bool a native C type?
...
bool exists in the current C - C99, but not in C89/90.
In C99 the native type is actually called _Bool, while bool is a standard library macro defined in stdbool.h (which expectedly resolves to _Bool). Objects of type _Bool hold either 0 or 1, while true a...
linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...直接上网！
1.用setup配网络参数:
2. 安装squid
[root@gjp99 ~]# mkdir /mnt/cdrom
[root@gjp99 ~]# mount /dev/cdrom /mnt/cdrom
mount: block device /dev/cdrom is write-protected, mounting read-only
[root@gjp99 Server]# rpm -ql squid |less
查看注释语句：
/etc/httpd/conf.d...
How to make a variadic macro (variable number of arguments)
...
C99 way, also supported by VC++ compiler.
#define FOO(fmt, ...) printf(fmt, ##__VA_ARGS__)
share
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improve this answer
...
Which is faster : if (bool) or if(int)?
...
99
Makes sense to me. Your compiler apparently defines a bool as an 8-bit value, and your system A...
Is “inline” without “static” or “extern” ever useful in C99?
...
NemoNemo
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How to initialize a struct in accordance with C programming language standards
...
In (ANSI) C99, you can use a designated initializer to initialize a structure:
MY_TYPE a = { .flag = true, .value = 123, .stuff = 0.456 };
Edit: Other members are initialized as zero: "Omitted field members are implicitly initialize...