
tin học
Quiz
•
Social Studies
•
9th - 12th Grade
•
Practice Problem
•
Medium
Inthone ne
Used 1+ times
FREE Resource
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40 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu lệnh nào sau đây thực hiện gán tên tệp cho biến tệp?
Rewrite(f2);
Assign(f2,'dulieu.txt');
Assign(f2,dulieu.txt);
Reset(f2);
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sau khi thực hiện đoạn lệnh S:=’Truong THPT Pleiku’; a:=Length(S); thì a bằng mấy?
15
18
11
14
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giả sử A là 1 biến, B là biến tệp thì lệnh đọc tệp nào là đúng?
Read(A,B);
Write(A,B);
Read(B,A);
Write(B,A);
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Giả sử B là biến tệp, x là biến, lệnh ghi dữ liệu vào tệp nào là sai?
Writeln(B, x:4);
Write(B,'x=',x);
Write(B, 'x=', x:4);
Read(B,x);
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chương trình sử dụng hai lệnh Assign(F,'SoNguyen.PAS'); Rewrite(F); Khi chạy chương trình, nếu trên ổ đĩa C đã có tệp SoNguyen.PAS thì máy sẽ?
Giữ nguyên dữ liệu của tệp SoNguyen.Pas
Ghi tiếp dữ liệu vào sau dữ liệu đã có trong tệp SoNguyen.Pas
Xóa toàn bộ dữ liệu của tệp SoNguyen.Pas
Đưa ra thông báo đã tồn tại tệp SoNguyen.Pas
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Câu lệnh nào xóa kí tự cuối cùng của xâu a?
delete(a,1,255)
delete(a,255,1)
delete(a,length(a),1)
delete(a,1,length(a))
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Để đọc dữ liệu trong tệp khi chưa hết tệp thì dùng câu lệnh lặp nào sau đây?
While not EOLn(f) Do
While EOF(f) = True Do
While not EOF(f) Do
While EOLn(f) = False Do
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