install cypress using vscode

   Open the visual studio code

Check if the terminal is not opened already then terminal -> New Terminal

Switch to the desired workspace by using cd C:/DemoWorkspace

Create a project directory by using mkdir CypressDemo

And switch to CypressDemo by using cd CypressDemo

In CypressDemo project directory call below npm command 

npm init -y

a package.json file is created.

Now open the project directory in vscode 

File -> open folder-> C -> DemoWorkspace -> CypressDemo -> Select Folder

Now go to vs code terminal and and run below command in CypressDemo project directory

npm install cypress