program tamsayilar;
uses crt;
var
b,eb,a:integer;
begin
clrscr;
 eb:=0;
 gotoxy(16,9);write('Sayy Giriver==>');
readln(a);
while(a<>0) do begin
 b:=a-trunc(a/10)*10;
 if (eb<b) then eb:=b;
 a:=trunc(a/10);
 end;
gotoxy(17,15); writeln('en byk=',eb);readln;
 end.
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