Trung bình cộng của cả dãy. Trung bình cộng các phần tử dương của mảng. Trung bình cộng các phần tử âm của mảng

2 câu trả lời

uses crt;

var a : array[1..250] of integer;

i, n, s, s2, s3, d2, d3 : integer;

begin

clrscr;

write('nhap so luong phan tu trong day : ');readln(n);

for i := 1 to n do

begin

write('nhap phan tu thu ', i ,' : ');readln(a[i]);

if a[i] > 0 then

begin d2 := d2 + 1; s2 := s2 + a[i]; end;

if a[i] < 0 then

begin d3 := d3 + 1; s3 := s3 + a[i]; end;

s := s + a[i];

end;

writeln('trung binh cong cac phan tu : ', (s/n):2:1);

writeln('trung binh cong phan tu duong : ', (s2/d2):2:1);

writeln('trung binh cong cac phan tu am : ', (s3/d3):2:1);

readln

end.

program day;
uses crt;
var a:array[1..500] of integer;
    n,i,d1,d2:integer;
    TB,TBd,TBa:real;
Begin
        clrscr;
        write('n = ');readln(n);
        for i:=1 to n do
        begin
                write('A[',i,'] = ');readln(a[i]);
                Tb:=Tb+a[i];
                if a[i]>0 then
                begin
                        TBd:=TBd+A[i];
                        d1:=d1+1;
                end;
                if a[i]<0 then
                begin
                        TBa:=TBa+A[i];
                        d2:=d2+1;
                end;
        end;
        TB:=TB/n;

        TBd:=TBd/d1;
        TBa:=TBa/d2;
        writeln('Trung binh ca day: ',TB:2:2);
        writeln('Trung binh duong: ',TBd:2:2);
        write('Trung binh am: ',Tba:2:2);
        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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