C application:
C1.It must allowmarkingas valideach vehicle, by afunctionintended for that purpose,and willchange the valueof the field "valid" to "1" in thetableobjects.
C2.Shouldenable themarkingof eachvehicleto be invalidbyafunction createdfor this purpose,and that willchange the valueof the field"valid" to "0"in the tableobjects.
C3.Shoulddisplay a menuthat allowsto identify whichisthe carthatyou want to markasvalid or invalid
C4.One of theoptions in this menushould becheck / uncheckall carsat once.
Help me
C1.It must allowmarkingas valideach vehicle, by afunctionintended for that purpose,and willchange the valueof the field "valid" to "1" in thetableobjects.
C2.Shouldenable themarkingof eachvehicleto be invalidbyafunction createdfor this purpose,and that willchange the valueof the field"valid" to "0"in the tableobjects.
C3.Shoulddisplay a menuthat allowsto identify whichisthe carthatyou want to markasvalid or invalid
C4.One of theoptions in this menushould becheck / uncheckall carsat once.
Help me