最小安装即可使用Microsoft Visual Studio运行C ++“ Hello World”程序？

Question

I have download the visual studio community 2019, and I just want to run a normal c++ program such as the simplest "hello world" on it. However due to the limited hard drive space, I would like to install the minimal component. From this post by Microsoft, I see one picture of the following:

First I thought I don't need all the optional parts on my computer, when finished, there is an error reporting no header files such as iostream . So I go back and install the first component, still can't run. So I want to ask what else should I install. I don't want install more than I need.

Here is screenshot from mine (maybe contain some characters you don't recognize, but you can guess from the context), and it is basically what I have installed:

Answer 1

unfortunately to my knowledge, you need to install all the default downloads that Microsoft wants you to install initially. The other files besides the core C++ are tools for the compiler and your standard library which is important for a lot of C++'s functionality. if you dont want to have to re-invent the wheel for every task these standard libraries are immensely important. Things like Vector containers, Ofstream, and Maps are all based in these libraries. As well as that they are important for code compilation and just making visual studio run as a whole. That being said C++ projects and code dont, for small projects like you were saying, create that large of files so while the initial installation might take a lot of memory once your past that you should be fine.

Answer 2

From my experiment, I found that at least these two optional components must be checked: