Viết chương trình nhập vào hai xâu s1(1<=s1<=255) và s2(s1>s2), kiểm tra xem s2 có là tiền tố và hậu tố của xâu s1 không? pascal hay python đều được ạ

2 câu trả lời

uses crt,strutils;
var s1,s2:string;
begin
clrscr;
   write('Nhap xau s1: ');readln(s1);
   write('Nhap xau s2: ');readln(s2);
   if pos(s2,s1)=1 then
      writeln('s2 la tien to cua s1')
   else
      writeln('s2 khong la tien to cua s1');
   if pos(reversestring(s2),reversestring(s1))=1 then
      writeln('s2 la hau to cua s1')
   else
      writeln('s2 khong la hau to cua s1');
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?

2 lượt xem
1 đáp án
11 giờ trước