program InputOutputExample;
begin
  // Variable declaration
  var
    age: Integer;

  WriteLn('Enter your age:');
  ReadLn(age);

  WriteLn('Your age is:', age);
end.

program DataTypesExample;
begin
  // Variable declaration
  var
    num1: Integer;
    num2: Double;
    name: String;

  num1 := 42;
  num2 := 3.14;
  name := 'John Doe';

  // Output to screen
  WriteLn('Integer:', num1);
  WriteLn('Double:', num2:0:2);
  WriteLn('String:', name);
end.

program SyntaxExample;
begin
  // Variable declaration
  var
    age: Integer;
    height: Double;
    name: String;

  // Input from user
  WriteLn('Enter your name:');
  ReadLn(name);

  WriteLn('Enter your age:');
  ReadLn(age);

  WriteLn('Enter your height (in meters):');
  ReadLn(height);

  // Output to screen
  WriteLn('Name:', name);
  WriteLn('Age:', age);
  WriteLn('Height:', height:0:2, 'm');
end.

dir: Lists the files and directories in the current directory.

cd: Changes the current directory. For example, "cd C:\Users" navigates to the Users folder on the C drive.

mkdir: Creates a new directory. Usage: "mkdir FolderName."

rmdir: Removes a directory. Usage: "rmdir /s FolderName" (the /s option is used to delete directories with content).

copy: Copies files from one location to another. Usage: "copy SourceFile DestinationFolder."

move: Moves files from one location to another. Usage: "move SourceFile DestinationFolder."

del: Deletes a file. Usage: "del FileName."

ren: Renames a file or directory. Usage: "ren OldName NewName."

type: Displays the content of a text file. Usage: "type FileName."

echo: Prints a message to the command prompt or a file. Usage: "echo Message" or "echo Message > FileName.txt" (saves the message to a file).

ipconfig: Displays network configuration details. Usage: "ipconfig" or "ipconfig /all" (displays detailed information).

ping: Sends a network request to a specific IP address or domain to check connectivity. Usage: "ping IPAddress" or "ping DomainName."

tracert: Traces the route packets take to reach a specified IP address or domain. Usage: "tracert IPAddress" or "tracert DomainName."

netstat: Displays network statistics, such as open ports and active connections. Usage: "netstat" or "netstat -a" (displays all connections).

tasklist: Lists all running processes. Usage: "tasklist" or "tasklist /v" (includes more details).

taskkill: Terminates or ends a running process. Usage: "taskkill /im ProcessName.exe" or "taskkill /pid ProcessID."

shutdown: Shuts down or restarts the computer. Usage: "shutdown /s" (shuts down) or "shutdown /r" (restarts).

sfc: Scans and repairs system files. Usage: "sfc /scannow" (scans and repairs) or "sfc /verifyonly" (scans without repairs).

chkdsk: Checks and repairs disk errors. Usage: "chkdsk C:" (checks the C drive) or "chkdsk /f C:" (checks and fixes errors).

systeminfo: Displays system information, such as OS version, hardware, and more. Usage: "systeminfo."

Remember that typing "help" in Command Prompt will display a list of all available commands with brief descriptions. To get more detailed information about a specific command, you can use "command /?" or "help command" (e.g., "dir /?" or "help dir").

There are two ways to delete the files that were installed with the latest Windows Update:

Using the Settings app:

Open the Settings app by pressing Windows+I.
Go to System > Storage.
Under Temporary files, select Windows Update Cleanup and Delivery Optimization Files.
Click Remove files.
Click Continue to confirm.
Using Disk Cleanup:

Open the Disk Cleanup tool by searching for it in the Start menu.
Select Clean up system files.
Check the box next to Windows Update Cleanup.
Click OK.
Click Delete Files to confirm.
Note: Deleting these files will not affect your Windows installation or any of your programs. However, if you need to roll back a Windows Update, you will need to keep these files.

Here are some additional things to keep in mind:

You can also delete these files manually by going to the C:\Windows\SoftwareDistribution\Download folder and deleting the contents of the folder.
If you are using a version of Windows prior to Windows 10, you can use the System Restore tool to delete Windows Update files.
If you are not sure whether or not you should delete these files, it is best to consult with a computer technician.

Both versions are correct.
Center is American English.
Centre is British English.

Pronounciation is a common mistake.
Pronunciation is correct.

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