mnunez:
Sir still same problem, only the Repeat every 10 seconds is working.
I have uploaded the files with no errors.
How is that the same problem??? The original problem you reported was a "'yield' was not declared in this scope" compilation error. Then you had a "No such file or directory" error. If you can upload to your Aceduino with no errors then it's surely not the same problem.
mnunez:
but I just don't what does bold orange font and non-bold font of the files means. The Time.h, DS3231.h, DS3231RTC and LiquidCrystal.h are now in bold orange font). The others are not in bold font. All I presume is that if the file name font is black in color, it just that the library is not suitable for a particular project.
It means absolutely nothing. Ignore the colors.