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yuethomas




PostPosted: Tue Apr 01, 2003 7:18 pm   Post subject: (No subject)

code:

...
    c := getPositiveInteger
...


This line prompts you to enter another number for C. As I am not familiar with the algorithm for calculating the GCM of two numbers, I have no idea what it's for.

Update:

After analyzing the algorithm, I think it's perfectly safe to change
code:
    var greatest, t, a, b, c : int
    c := getPositiveInteger
    a := c

into
code:
    var t, a, b : int
    a := m
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MysticAngel




PostPosted: Wed Apr 02, 2003 6:06 pm   Post subject: (No subject)

i dont know why this isnt working ????
code:

function getPositiveInteger : int
    var n : int
    loop
        get n
        exit when n > 0
        put "Positive interger please  " ..
    end loop
    result n
end getPositiveInteger
%--------------------------------------------
function Factorial(n: int): real
    var count, count1 : int
    loop
        count := count + 1
        count1 := count1 * count
        exit when count = n
        end loop
    result count1
end Factorial
%-----------------------------------------
function Permutation (n, r : int) : real   
    var p : int
    p := Factorial(n) div (n - r)
    result p
end Permutation
%----------------------------------------
function Combination (n, r : int) : real
    var c : int
    c := Factorial(n)  div r*(n-r)
    result c
end Combination
%------------------*Main Program-------------------------
var num1, num2, a, b : int
put "Please enter a positive number"
num1 := getPositiveInteger
put "Please enter another positve number"
num2 := getPositiveInteger
if num1 >= num2 then
    a := Permutation(num1,num2)
    put a
    b :=Combination (num1,num2)
    put b
end if

Tony




PostPosted: Wed Apr 02, 2003 6:19 pm   Post subject: (No subject)

thats because your functions return real values, but you try to assign them to integer varaibles.

declear a,b as real and it should work
Latest from compsci.ca/blog: Tony's programming blog. DWITE - a programming contest.
MysticAngel




PostPosted: Wed Apr 02, 2003 8:20 pm   Post subject: (No subject)

is this correct. like this is n!. if u input 5 the answer shuld be (5! = 1*2*3*4*5) = 120


[/code]
function Factorial(n: int): real
var count,e : int
count := 1
loop
count := count + 1
e := 1 * count
exit when count = n
end loop
result n
end Factorial
Prince




PostPosted: Wed Apr 02, 2003 8:35 pm   Post subject: (No subject)

try splitting the factorial function so ur finding the factorial of num1, num2 and num1 - num2... finding the permutations and combinations should b easier then
MysticAngel




PostPosted: Wed Apr 02, 2003 8:43 pm   Post subject: (No subject)

huh ????? Confused
MysticAngel




PostPosted: Wed Apr 02, 2003 9:20 pm   Post subject: (No subject)

I dont understand what u said. how do i do that
Prince




PostPosted: Wed Apr 02, 2003 9:24 pm   Post subject: (No subject)

like this

code:

function nFactorial (n : int) : real
    var N : real := 1
    for j : 1 .. n
        N := N * j
    end for
    result N
end nFactorial


thats for num1

code:

function rFactorial (r : int) : real
    var R : real := 1
    for j : 1 .. r
        R := R * j
    end for
    result R
end rFactorial


thats num2

code:

function nrFactorial (var n, r : int) : real
    var NR : real := 1
    for j : 1 .. n - r
        NR := NR * j
    end for
    result NR
end nrFactorial


and that one is num1 - num2... it may seem confusing (ok it really is) but its really not that hard (especially since i did this last year Very Happy)

MOD Edit: thx for the help +10Bits - Tony
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MysticAngel




PostPosted: Wed Apr 02, 2003 9:30 pm   Post subject: (No subject)

So when i call it somewhere i would call nrFactorial rite?
Prince




PostPosted: Wed Apr 02, 2003 9:45 pm   Post subject: (No subject)

thats rite
yuethomas




PostPosted: Wed Apr 02, 2003 9:56 pm   Post subject: (No subject)

Uh, a factorial can only result in an integer. No sense declaring it as a REAL function.
Prince




PostPosted: Wed Apr 02, 2003 10:14 pm   Post subject: (No subject)

test any one of those functions with a value over 10 and u'll see y it has to b REAL... did u do it?? ok then...
Tony




PostPosted: Wed Apr 02, 2003 10:43 pm   Post subject: (No subject)

damn low level turing Evil or Very Mad C++'s int variable is much larger is size Very Happy
Latest from compsci.ca/blog: Tony's programming blog. DWITE - a programming contest.
MysticAngel




PostPosted: Sat Apr 05, 2003 5:57 pm   Post subject: (No subject)

in a number theory, wat does the sum of the proper factors of a number mean. i mean how would you frame it.
yuethomas




PostPosted: Sun Apr 06, 2003 1:04 am   Post subject: (No subject)

Proper factors of a number is the factors of that number except 1 and the number itself. For example, the proper factors of 30 are 2, 3, 5, 6, 10, and 15.

So the sum of the proper factors of 30 would be 2+3+5+6+10+15=31.
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