c++ - The send function in windows socket can only send char *, but my project encoding is unicode?

{Code...} found that it was converted into multi-byte transmission, and the server side was garbled. . .

From [C++discussion group] 2017-05-16 13:21:36 0  1  861

Data Structure - Problems with pointer array assignment in C++?

As the title says, I defined a two-dimensional pointer array in Figure 1. The content of each pointer pointing...

From [C++discussion group] 2017-05-16 13:21:23 0  1  675

Image processing - C++ freeimage uses online examples to invert the image, and a very strange result appears.

I have recently been using the C++ image processing library freeimage. I encountered a problem here. The cause...

From [C++discussion group] 2017-05-16 13:21:19 0  1  933

c++ - Unnamed namespace cannot be placed in .h

Unnamed namespaces cannot be placed in .h. Can you give an example why this is not allowed? I haven't found an...

From [C++discussion group] 2017-05-16 13:21:09 0  1  934

Windows - Looking for a complete example, C++ anonymous pipe transfers data between parent and child processes!

I have found a lot of articles on the Internet that introduce pipelines, but the codes posted are either fragm...

From [C++discussion group] 2017-05-16 13:20:54 0  1  997

c++ - mac cannot find the file after installing with brew

I used homebrew to install gflags, glog and other packages, and then an error occurred when compiling a projec...

From [C++discussion group] 2017-05-16 13:20:46 0  2  725

c++ - C语言的语法问题,求大神帮忙?

这句代码怎么又名字有两个的？？是什么意思呢？？大神帮忙解释一下

From [C++discussion group] 2017-04-17 15:40:01 0  3  620

c++ - win7下CreateFile失败，GetLastError返回5

我在DLL中使用了如下代码创建文件： {代码...} 然后将dll注入到explorer.exe中执行。在xp以及没有开启UAC的win7上都是正常的，但开启了UAC的win7上，会创建失败，GetLastError返回...

From [C++discussion group] 2017-04-17 15:39:57 0  2  1040

C++的STL中关于new的用法，求帮忙！

以下是STL源码中的一段： {代码...} 平时看见的new，是类似这样的用法 {代码...} new ((void*) __p) _T1();和__p=new _T1;等同吗？而_T1()中的()又有什么特别含义吗？希...

From [C++discussion group] 2017-04-17 15:39:53 0  1  698

c++ - 能否帮忙解释一下placement new的原型

{代码...} 这是我查到关于placement new的原型，size_t为什么在“new(&str1) std::string("abc");”中没有体现？为什么直接return ...

From [C++discussion group] 2017-04-17 15:39:48 0  1  639

c++ - proxy 在 a lightweight proxy object 表示的是什么意思?

比如 An object of type std::initializer_list<T> is a lightweight proxy object that provides access...

From [C++discussion group] 2017-04-17 15:39:35 0  0  760

c++ - C引入开源库的编译步骤

目前我有一个C程序，想使用一个开源库h3，它的文件结构如下： 我引用了.h文件后，然后使用gcc报错找不到so文件。搜了很多资料后发现有提到需要先进行cmake，再使用cmake出来的文件。我在自己的机器上直接cmake...

From [C++discussion group] 2017-04-17 15:39:29 0  1  702

输入流 - C++中一行中的数据量过大，怎样完成输入

以前只是利用cin读取简单的几个数据，现在要输入的数据在一行内，大概包含5000个四位数，利用下面的代码后发现输入到七八百个就无法继续输入了，这是cin的问题吗（只能在输入回车键后，才能将数据送入缓冲区）？...

From [C++discussion group] 2017-04-17 15:39:19 0  2  689

c++编译遇到重复定义

一直对编译这个事情不是太明白，想好好学习一下，今天自己写东西试验，遇到了这么个问题，想请教一下，先贴代码 {代码...} {代码...} {代码...} 本来觉得这个是很简单的，但是链接的时候报了错，提示是 {代码......

From [C++discussion group] 2017-04-17 15:39:16 0  1  551

c++ - alignas会影响sizeof吗

{代码...} 为什么数组的输出是3呢？为什么这里的alignas没有影响sizeof，而对struct 又影响了大小呢？

From [C++discussion group] 2017-04-17 15:39:12 0  1  1008