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Program câu 1;
Var n: Integer; s:real;
Begin
Writeln(‘ Nhap gia tri n=’); Readln(n);
S:=0;
While n<0 do
begin
s:=s+n/2; n:=n-1;
end;
write(‘tong s = ‘, s:8:2);
Readln;
End.
Lỗi sai:
Program câu 1; -> Tên chương trình không chứa dấu cách trắng.
-> Sửa: Program cau_1;
Writeln(‘ Nhap gia tri n=’); Readln; -> Nhập giá trị cho n nhưng thiếu lệnh đọc n
-> Sửa:
Writeln(‘ Nhap gia tri n=’); Readln(n);
While n >0 do
s:=s+n/2; n:=n-1;
Cả 2 câu lệnh s:=s+n/2; n:=n-1; đều nằm trong vòng lặp while..do nên cần begin...end con.
-> Sửa
While n >0 do
begin
s:=s+n/2; n:=n-1;
end;
| Program Tinhoc | Program Tinhoc; |
| Var i,n,S:real | Var i,n,S:real |
| Begin | Begin |
| Write(nhap so); | Write("nhap so"); |
| readln(n); | readln(n); |
| i=1; | i:=1; |
| while i<n | while i<n do |
| begin | begin |
| s:=s+i | s:=s+i; |
| i:=i+1 | i:=i+1; |
| end; | end; |
| write('Ket qua la: ' S); | write('Ket qua la: ' ,S); |
| readln; | readln; |
| end | end. |
Question 1: New sources of energy (A) have been looking (B) for as the number (C) of fossil fuels continues (D) to decrease.
B => been looked
Question 2: Vietnam exports (A) a lot of rice is grown (B) mainly in (C) the south of (D) the country.
B => grown
Question 3. He passed (A) the exam with (B) high scores, that (C) made his parents happy (D).
C => which
Question 4. To attract (A) someone’s attention, we can use (B) either verbal and non-verbal (C) forms of communication (D).
C => or non-verbal
Question 5. The doctor's records must be kept (A) thorough and (B) neatly (C) so as to insure (D) good book – keeping.
C => neat
Question 6. Rabbit and hares (A) look much (B) like and are often (C) mistaken for (D) each other.
like => alike
Question 7. In the United States (A) among 60 per cent (B) of the space on the pages of newspapers (C) is reserved for (D) advertising.
A => about
Question 8: My mother (A) reminded me (B) to remember (C) to water her (D) house plants.
B => bỏ
Question 9: Bill (A) is often late (B) for class, (C) which makes his teachers (D) angrily. angrily => angry |
Question 10: Mumps (A) are a very (B) common disease (C) which (D) usually affects children. A => is |
End. phải dùng End; mới đúng
Câu 1: Bạn phải cho xâu S như thế nào đã chứ. Nhìn chung đoạn chương trình không mắc lỗi nào về cú pháp.
Câu 2:
Program hotrotinhoc;
var s1,s2: string;
begin
write('Nhap xau s1 :'); readln(s1);
write('Nhap xau s2 :'); readln(s2);
insert(s1,s2,1);
write('Xau s2 sau khi chen la :',s2);
readln
end.