1.Sửa:
PHP Code:
...
if(length(s1)>length(s2) then
write(s1)
else
if(length(s1)=length(s2)) then
writeln('2 xau bang nhau')
else
write(s2);
...
2.
PHP Code:
begin
readln(s1,s2);
for i:=length(s1) downto 1 do
write(s1***91;i***93;);
for i:=length(s2) downto 1 do
write(s2***91;i***93;);
readln;
end.
3.
PHP Code:
program xoacach;
var i:integer;
str:string***91;50***93;;
begin
write('Nhap xau: ');
readln(str);
for i:=1 to length(str) do
if(str***91;i***93;=' ') then
delete(str,i,1);
for i:=1 to length(str) do
write('Ket qua: ',str***91;i***93;);
readln;
end.
4.Sửa bài trên như sau:
PHP Code:
...
if(s***91;i***93;>='0') and (s***91;i***93;<='9') then
...
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