1. Nhập vào một xâu, biến đổi xâu đó thành chữ hoa

Gợi ý:

• Nhập xâu

• Duyệt các tất cả các phần tử của xâu • In ra xâu chữ hoa: write(upcase(S[i]));

2. Nhập vào 1 xâu, in ra chuỗi ngược

Gợi ý:

• Nhập xâu

• Duyệt các tất cả các phần tử của xâu theo vòng for ngược:

For i:=length(S) downto 1 do

• In xâu

2 câu trả lời

1)

uses crt;
var s: string;
begin
clrscr;
    readln(s);
    writeln(upcase(s));
readln;
end.

2)

uses crt;
var s: string;
    i: longint;
begin
clrscr;
    readln(s);
    for i:=length(s) downto 1 do write(s[i]);
readln;
end.

1. Nhập vào một xâu, biến đổi xâu đó thành chữ hoa;

uses crt;
var s:string;
begin
 clrscr;
  write('nhap xau s:');readln(s);
  write(upcase(s));
 readln;
end.

2. Nhập vào 1 xâu, in ra chuỗi ngược;

uses crt;
var s:string;i:longint;
begin
 clrscr;
  write('nhap xau s:');readln(s);
  for i:=length(s) downto 1 do write(s[i]);
 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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