The code you provided seems to be written in the Lua programming language. To run this code on your Windows PC, you need to install a Lua interpreter. Here are the steps to install and run Lua on Windows:
1. Download the Lua for Windows (LfW) installer from the official website: https://github.com/rjpcomputing/luaforwindows/releases
2. Run the installer and follow the instructions to install Lua on your system.
3. Once Lua is installed, open a command prompt or PowerShell window.
4. Navigate to the directory where you saved the Lua code file using the cd command.
5. Type lua followed by the name of the Lua code file to run the code. For example, if your code file is named test.lua, type lua test.lua and press Enter.
Here's the modified Lua code that includes the do and end keywords to create a block of code to execute repeatedly while the condition is true:
a = 3
while a < 7 do
  a = a + 1
  print("The current value of a is: ", a)
  if a == 5 then
    print("a is now 5")
  end
end

Save this code to a file with a .lua extension, and follow the steps above to run it on your Windows PC.
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