如何使用 Visual Studio C++ 编译器？
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How to use Visual Studio C++ Compiler?
提问by Afzaal Ahmad Zeeshan
I recently installed Visual Studio 2013. I can create a new project (Visual C++), but the error I have to come across is that I cannot run the app. Here is the code that I'm trying to run on Visual Studio 2013.
我最近安装了 Visual Studio 2013。我可以创建一个新项目（Visual C++），但是我遇到的错误是我无法运行该应用程序。这是我尝试在 Visual Studio 2013 上运行的代码。
#include <iostream>
using namespace std;
int main() {
cout << "Hello World";
return 0;
}
I am sure this code would run, and will output hello world, but in Visual Studio it gives me issues, saying:
我确信这段代码会运行，并会输出hello world，但在 Visual Studio 中它给了我一些问题，说：
Values cannot be null,
Parameter name: solutionDirectory.
值不能为空，
参数名称：solutionDirectory。
What am I missing here?
我在这里缺少什么？
Here is an image for this:
这是一个图像：
回答by tomi.lee.jones
In Visual Studio, you can't just open a .cppfile and expect it to run. You must create a project first, or open the .cpp in some existing project.
在 Visual Studio 中，您不能只是打开一个.cpp文件并期望它运行。您必须先创建一个项目，或者在某个现有项目中打开 .cpp。
In your case, there is no project, so there is no project to build.
在您的情况下，没有项目，因此没有要构建的项目。
Go to File --> New --> Project --> Visual C++ --> Win32 Console Application. You can uncheck "create a directory for solution". On the next page, be sure to check "Empty project".
去File --> New --> Project --> Visual C++ --> Win32 Console Application。您可以取消选中“为解决方案创建目录”。在下一页，一定要勾选“Empty project”。
Then, You can add .cppfiles you created outside the Visual Studio by right clicking in the Solution exploreron folder icon "Source" and Add->Existing Item.
然后，您可以.cpp通过右键单击Solution explorer文件夹图标“源”和“添加”->“现有项目”来添加您在 Visual Studio 之外创建的文件。
Obviously You can create new .cpp this way too (Add --> New). The .cpp file will be created in your project directory.
显然，您也可以通过这种方式创建新的 .cpp（添加 --> 新建）。.cpp 文件将在您的项目目录中创建。
Then you can press ctrl+F5 to compile without debugging and can see output on console window.
然后你可以按 ctrl+F5 编译而不调试，可以在控制台窗口看到输出。
回答by TinyMrCaliber
You may be forgetting something. Before #include <iostream>, write #include <stdafx.h>and maybe that will help. Then, when you are done writing, click test, than click output from build, then when it is done processing/compiling, press Ctrl+F5 to open the Command Prompt and it should have the output and "press any key to continue."
你可能会忘记一些事情。之前#include <iostream>，写#include <stdafx.h>一下，也许这会有所帮助。然后，当您完成编写时，单击测试，然后单击构建的输出，然后在完成处理/编译后，按 Ctrl+F5 打开命令提示符，它应该有输出并“按任意键继续”。
