SRL Archive - General

I've been doing some experimenting with SCAR, and I wanted to know if it was possible to have a variable's value unknown.

Can't really delve deeper than that, sorry.

Please answer, ;)

Mike.

kinda like when you make a string equal '' (< that's two single quotes)?

I haven't tested strings yet, but I do know that integers are equal to zero.

Like with algebra, the x is unknown, you have to figure it out.

ooo I remember trying to brute force equations on my TI last year…they're too slow for it, though…especially if the answer can have decimals

I don't understand why you need the x to be unknown though?

x = 0 will work.

Before you solve an equation, x always starts at zero


5x = 10

divide the 5

x = 2

;)

From: Ejjman1
x = 0 will work.

Before you solve an equation, x always starts at zero


5x = 10

divide the 5

x = 2

;)

x = 0 will make x = 0

If, in the equation, you have to multiply the x by two, and the x's value was, say, five, the answer would be ten. Using SCAR, you'd end up with zero as the answer.

(Zero times anything equals zero)

You can use null in SCAR, but I have not been able too create a relationship between integers and null. The weird thing is, you can compare integer's no null, but not strings, etc.. However, I don't know how to make the actual integer;s value null.

program New;
var x: Integer;
    S: String;

begin
  if (x = null) then
    WriteLn('True')
  else writeln('False');
  if (null = null) then
    WriteLn('True')
  else writeln('False');
  if (s = nul) then
    WriteLn('True')
  else writeln('False');
end.