Program cau1;
Uses crt;
Var s,n,i: integer;
Begin
Clrscr;
Write('nhap n = '); readln(n);
For i:=1 to n do if i mod 2 = 1 then write s:=s+i;
Write('tong cac so le nho hon',n,' la ', s);
Readln;
End.
Program cau2;
Uses crt;
Var i,S: integer;
Begin
Clrscr;
S:=0;
i:=1;
While i<=100 do
Begin
S:=S+1/i;
i:=i+1;
End;
Writeln('tong so can tim la ', t :0:2 );
Readln;
End.
Zw