duplicate ' in string delphi

To duplicate a single quote ('') within a string in Delphi, you can use two single quotes consecutively (''). This will escape the single quote and treat it as a literal character within the string. Here's an example:

var
  myString: string;
begin
  myString := 'This is a single quote ('''') within a string.';
  // myString now contains: "This is a single quote ('') within a string."
end;

By using two single quotes ('') together, you can include a single quote within your string without causing any syntax errors.