Appearance: vs2019 c project has been under a pile of small .h SDK is installed before the file in question on the nature of the cause, leading to the SDK can not find the .h
Confirmation method: Right-click the project - Properties - General sdk which has a line, look inside is not empty or has
Solution: find Visual Studio Installer
As shown below:
Double click on above Visual Studio Installer, modify the point, check the following options: (python can not, python python is to review recent use)
And then to the menu components: a look SDK versions installed by default, I installed by default is: 10.0.18362.0 this version, this version has, in fact, the latest version of the often problematic, need specific modifications, the most convenient side is to check on the old version, I chose 10.0.16299.0 version, and so on installed on it.
The problem is relatively simple, just leave a record, red pandas happy every day :) write code -