Computer Science Canada

Errr im practising and got stuck
Author:  Flikerator [ Sat Mar 05, 2005 12:16 am ]
Post subject:  Errr im practising and got stuck
Alright here it is;

code:

function moves (var a1, b1, c1, d1 : int) : int
    a1 := a (i)
    b1 := b (i)
    c1 := c (i)
    d1 := d (i)
end moves

It wont work because "i" hasnt been declared yet, and here it is;

code:

for i : 1 .. 5
    put "There are ", "moves from (", a (i), ",", b (i), " to (", c (i), ",", d (i), ")"
end for


Here is the entire thing;

code:
var a, b, c, d : array 1 .. 5 of string
var file : int

open : file, "Data32.txt", get

for i : 1 .. 5
    get : file, a (i)
    get : file, b (i)
    get : file, c (i)
    get : file, d (i)
end for

function moves (var a1, b1, c1, d1 : int) : int
    a1 := a (i)
    b1 := b (i)
    c1 := c (i)
    d1 := d (i)
end moves

for i : 1 .. 5
    put "There are ", "moves from (", a (i), ",", b (i), " to (", c (i), ",", d (i), ")"
end for



I just need to make the a1,b1,c1,d1 vars into those so I can make the calculation for later. This draws from a file so you cant really get the answers...
Author:  Cervantes [ Sat Mar 05, 2005 7:54 am ]
Post subject: 
I don't get it. For one, your moves function doesn't return a value. And you're not calling your moves function anywhere. (Or do you do that later?)
Anyways, you've got two choices. Here they are:

code:

function moves (i : int, var a1, b1, c1, d1 : int) : int
    a1 := a (i)
    b1 := b (i)
    c1 := c (i)
    d1 := d (i)
    %you need a result something somewhere in here.  That, or make it a proc
end moves

%to call it:
for i : 1 .. 5
    moves (i, someVariable, someOtherVariable, anotherVariable, finallyTheLastVariable)
end for


or

code:

function moves (var a1, b1, c1, d1 : int) : int
    for i : 1 .. 5
        a1 := a (i)
        b1 := b (i)
        c1 := c (i)
        d1 := d (i)
    end for
    %again, make it result something, or make it a proc
end moves

%and to call it
moves (i, someVariable, someOtherVariable, anotherVariable, finallyTheLastVariable)

Hope that helps,
-Cervantes
Author:  Flikerator [ Sat Mar 05, 2005 12:06 pm ]
Post subject: 
Well I couldn't do the calculation accuratly until I got those variables, but yes that works thank you again lolz.

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