a)
program chan_le;
uses crt;
var n:integer;
function ktcl(k:integer):boolean;
begin
if k mod 2=0 then ktcl:=true else ktcl:=false;
end;
begin
clrscr;
write('Nhap so can kiem tra: '); readln(n);
if ktcl(n)=true then write('Chan') else write('Le');
readln;
end.
a)
program am_duong;
uses crt;
var n:integer;
fucntion ktad(k:integer):boolean;
begin
if k>0 then ktad:=true
else ktad:=false;
end;
begin
clrscr;
write('Nhap so can kiem tra: '); readln(n);
if n=0 then write('Khong am khong duong')
else if ktad(n)=true then write('Duong')
else write('Am');
readln;
end.