Bài 1:
program dem_chu;
uses crt;
var s:string;
i,d:byte;
begin
clrscr;
write('Nhap xau: '); readln(s);
d:=0;
for i:=1 to length(s) do
if (s[i] in ['a'..'z']) or (s[i] in ['A'..'Z']) then d:=d+1;
write('Co ',d,' chu cai tieng Anh');
readln;
end.
Bài 2:
program tich_day;
uses crt;
var A:array[1..100] of integer;
n,i:byte;
tich:int64;
begin
clrscr;
write('Nhap n: '); readln(n);
tich:=1;
for i:=1 to n do
begin
write('A[',i,']= '); readln(A[i]);
tich:=tich*A[i];
end;
write('Tich cac so la: ',tich);
readln;
end.
Hoàn toàn chính xác nha bạn
