Sum/difference between the numbers

Hello

Why does this work?
declare
a number(4,2):=1.0;
b number(6,2):=0.1;
c number(5,2):=0.9;
begin
  dbms_output.put_line('Rezultat: '|| a - b - c);
end;
How is that OK? I want to calculate a-b-c, or a - b + c, etc...

Thanls

Try this:

  1  declare
  2  a number(4,2):=1.0;
  3  b number(6,2):=0.1;
  4  c number(5,2):=0.9;
  5  begin
  6    dbms_output.put_line('Rezultat: '|| (a - b - c));
  7* end;
  8  /
Rezultat: 0

Tags: Database

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