uses crt;
var a,b:integer;
begin
clrscr;
write('a='); readln(a);
write('b='); readln(b);
if b=0 then writeln('khong co phep chia cho 0')
else writeln('thuong cua phep chia ',a,' cho ',b,' la: ',a/b:4:2);
readln;
end.
program ho_tro;
uses crt;
var a,b,c: real;
begin
clrscr;
writeln(' nhap a va b:'); readln(a,b);
if b<>0 then c:=a/b
else writeln(' loi yeu cau nhap lai:');
writeln(' ket qua cua a chia b la:',c);
readln;
end.