SELANG-SELING TANDA PLUS DAN MINUS
uses SysUtils, Math
var a, b , c , d : real;
begin
d := 1;
a := 0;
c := 0;
for i := 1 to 5 do
begin
a : a + 1;
c : c + 1;
d := d * power ((-1) , i)
b := c + a*d;
end;
writeln(b:5:0);
readln;
end.
Hehe... mohon dikoreksi kalau ada salah..... ^^