Viết chương trình nhập vào một xâu có độ dài 20. Sau đó tạo xâu mới gồm 5 kí tự của xâu vừa nhập bắt đầu từ vị trí thứ 3 và in xâu vừa tạo

2 câu trả lời

uses crt;
var s,s1:string;
begin
clrscr;
   write('Nhap vao xau co do dai 20: ');readln(s);
   s1:=copy(s,3,5);
   writeln('Ket qua: ',s1);
readln
end.

program bai_giai;

uses crt;

var s1:string[20];s2:string[5];

begin

clrscr;

write('nhap xau thu 1:');readln(s1);

write('nhap xau thu 2:');readln(s2);

insert(s1,s2,3);

write('xau vua tao la:',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?

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