viết chương trinhg nhập vào bàn phím một dãy số gồm N phần tử (N<100). Hằng đếm và tính tổng các bình phương phân tử âm của dãy

2 câu trả lời

uses crt;
var a:array[1..101]of longint;
n,s,i,d:longint;
begin
clrscr;
write('n=');
readln(n);
i:=0;
repeat
begin
i:=i+1;
write('phan tu ',i,':');
readln(a[i]);
if a[i]<0 then
    begin
    s:=s+sqr(a[i]);
    d:=d+1;
    end;
end;
until
i>=n;
writeln('phan tu am',d:2);
writeln('tong phan tu am',s:2);
readln
end.

uses crt;
var s,dem:int64;i,n:longint;a:array[1..99]of longint;
begin
 clrscr;
  write('nhap n:');readln(n);
  s:=0;
  dem:=0;
  for i:=1 to n do
        begin
         write('a[',i,']=');readln(a[i]);
         if(a[i]<0)then
                begin
                 inc(dem);
                 s:=s+sqr(a[i]);
                end;
        end;
  writeln('dem=',dem);
  write('s=',s);
 readln
end.

Câu hỏi trong lớp Xem thêm

giup e voi I/ Supply the correct form of the verbs in brackets 1. You (think) ……………………… collecting stamps costs much money? 2. Every year, my mother (give) ……………………… me a nice doll on my birthday. 3. Jenny says she loves collecting pens but she (not/continue) ……………………… this hobby from next year. 4. If you wash your hands more, you (have)……………………. less chance of catching flu. 5. Getting plenty of rest is very good. It (help)…………………. you to avoid depression. 6. Mr. John (be) ……………………… principal of our school since last year. 7. I (see) ……………………… a car accident on this corner yesterday. 8. We like (come)……………………to school by bus, but we hate (stand)………………………. and (wait) …………………… in the rain. 9. ……………………… (you/ ever/ meet) anyone famous? 10. My mother (come) ……………………… to stay with us next weekend. 11. When he lived in Manchester, he (work) ……………………… in a bank. 12. We (be) ……………………… students for four years. 13. We are planting trees around our school now. Our school (be) ……………………… surrounded by a lot of green trees. 14. What ……………………… your father usually ……………………… (do) in the evenings? 15. My sister likes (cook) ……………………… very much. She can cook many good foods. 16. My father says when he's retired, he (go) …………………… back to his village to do the gardening. 17. They want (buy) ……………………… some meat for dinner. 18. Linh is my best friend. We (know) ……………………… each other for 5 years. 19. I enjoy (fish) ……………………… because it is relaxing. 20. How about (go) ……………………… to the movie theatre?

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