How to create a script to automatically fill in the date when changing in the adjacent cell?

Question

Google Sheets

There is a sheet of the Google table, where the column "c" is filled with hands. We need a script that tracks changes in the cells of the "c" column, which will return the value of the current date to the cell of the neighboring column "d". I can not adapt the scripts that I found because the noob in this matter. Help me please.

Answer 1

function onEdit(e){
  var range = e.range;
  if(range.getColumn() === 3){
    let dat = new Date();
    SpreadsheetApp.getActiveSheet().getRange(range.getRow(), 4).setValue(Utilities.formatDate(dat, "GMT+3", "dd.MM.yyyy"));
  }
}