請問各位前輩 w與w 最大的差異在哪裡?? 是存取速度嗎?? 謝謝

Hello kelvincoby, w: 為寫檔而開檔,若檔案已存在,則清除內容 w : 為讀寫為開檔,若檔案存在,則先清檔 w Create for writing. If a file by that name already exists, it will be overwritten. w Create a new file for update (reading and writing). If a file by that name already exists, it will be overwritten.