Câu 1:
program C;
uses crt;
var s,n,i:integer;
begin
clrscr;
write('Nhap n: '); readln(n);
for i:=1 to n do s:=s+i;
write('Tong: ',s);
readln;
end.
Câu 2:
program C;
uses crt;
var s,i:integer;
begin
clrscr;
s:=1;
for i:=1 to 30 do s:=s*i;
write('Tich: ',s);
readln;
end.
Câu 3:
program C;
uses crt;
var a:array[1..100] of integer;
s,i,n,max:integer;
begin
clrscr;
write('Nhap so luong phan tu: '); readln(n);
for i:=1 to n do
begin
write('a[',i,']: '); readln(a[i]);
end;
max:=a[1];
for i:=2 to n do if a[i]>max then max:=a[i];
write('GTLN: ',max);
readln;
end.