Èíôîðìàòèêà


           

N ÷èñåë çäåñü îïèñàí ÷åðåç


       s = SN / N
Îáðàòèòå âíèìàíèå: ìåòîä âû÷èñëåíèÿ
ñðåäíåãî N ÷èñåë çäåñü îïèñàí ÷åðåç ïîäñ÷åò ñóììû ÷èñåë. Ïðàâèëüíîñòü ìåòîäà ìîæåò áûòü ïðîâåðåíà ïî îòíîøåíèþ ê òðåáîâàíèÿì ïîñòàíîâêè çàäà÷è.
Ïðèâåäåì àëãîðèòì è ïðîãðàììó îáðàáîòêè äàííûõ, ñîñòàâëåí­íûå â òî÷íîì ñîîòâåòñòâèè ñ âûáðàííûì ñöåíàðèåì è ìåòîäîì ðåøåíèÿ:
Àëãîðèòì                                                                  Ïðîãðàììà
àëã «ñðåäíåå àðèôìåòè÷åñêîå»                             ' ñðåäíåå àðèôìåòè÷åñêîå
íà÷                                                                              cls
âûâîä («ñðåäíåå N ÷èñåë»)                                     ? «ñðåäíåå N ÷èñåë»
çàïðîñ («÷èñåë=», N)                                                input «÷èñåë=», N
S
:= 0                                                                          S = 0
åñëè N <= 0 òî                                                         if N <= 0 then
âûâîä («íåäîïóñòèìî N»)                                       ? «íåäîïóñòèìî N»
èíåc N > 0 òî                                                           elseif N > 0 then
îò k = 1 äî N öèêë                                                   for k = 1 to N
âûâîä (k, «:»)                                                           ? k, «:»
çàïðîñ (x)                                                                 input x
S
:= S + x                                                                  S = S + x
êöèêë                                                                         next k
s
:= S/N                                                                      s = S/N
âûâîä («ñðåäíåå =», s)                                             ? «ñðåäíåå=», s
âñå                                                                             end if
êîí                                                                              end
Ïðè ðåøåíèè ñëîæíûõ çàäà÷ äëÿ ïðîâåðêè ïðàâèëüíîñòè ñîñòàâ­ëÿåìûõ àëãîðèòìîâ è ïðîãðàìì îáÿçàòåëüíû íå òîëüêî ìàòåìàòè÷åñ­êîå îïèñàíèå ïîñòàíîâêè çàäà÷, íî è îïèñàíèå âûáðàííûõ ìåòîäîâ ðåøåíèÿ.

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