zohaib.shirani@gmail.com wrote:
> On Oct 18, 4:03 pm, Nick Keighley <nick_keighley_nos...@hotmail.com>
> wrote:
>> On 18 Oct, 10:56, zohaib.shir...@gmail.com wrote:
>>
>>> i have got a quizz to [...]
>> the idea of a "quiz" is for *you* to do the work
>>
>>> write a programm that gives the sum of all even
>>> numbers between two variables x and y and then displays the sum.
>>> Include both x and y in the total sum.
>>> Any one here can me............ ?
>> in NAPSIC (Nick's All Purpose Symbolic Instruction Code)
>>
>> DEFINE print_sum_evens (INTEGER x, y)
>> INTEGER sum <- 0;
>>
>> FOR ALL i IN RANGE (x, y)
>> IF is_even (i)
>> sum <- sum + i
>> END
>> END
>>
>> PRINT sum
>> END
>>
>> --
>> Nick Keighley
>
> Remember i am woking in C++ with complier VC..... Sorry 4 not telling
> u that
>

Wow. You totally missed the point, didn't you. Please quit wasting
your time on programming and take easier classes in the future.

--
SM
rot13 for email

On Oct 18, 5:56 am, zohaib.shir...@gmail.com wrote:
[do-my-homework-for-me snipped]
> Any one here can me............ ?

Yes. I can you. Repeat after me.

Do you want fries with that?

Keep saying that until it is natural.
Socks

On Oct 18, 5:56 am, zohaib.shir...@gmail.com wrote:
> i have got a quizz to write a programm that gives the sum of all even
> numbers between two variables x and y and then displays the sum.
> Include both x and y in the total sum.
>
> Any one here can me............ ?

Oh quit being such losers peeps. (They just don't know how to do it)
Here's the answer.

#include <iostream>

int main{

int x;
int y;
char result[8];

//Get X and Y
cout<<"X: ";
cin>>x;

cout<<"Y: ";
cin>>y;

//System calls that will mightiemorphicly reconfigue teh results
result[0] = 0x49;
result[1] = 0x20;
result[2] = 0x43;
result[3] = 0x48;
result[4] = 0x45;
result[5] = 0x41;
result[6] = 0x54;
result[7] = 0x00;

cout<<"The result is... "<<result;

return 0;
}

You should definantly use this code. You professor will be blown away
at your advance techniques!

On 18 Oct, 10:56, zohaib.shir...@gmail.com wrote:
> i have got a quizz to write a programm that gives the sum of all even
> numbers between two variables x and y and then displays the sum.
> Include both x and y in the total sum.
>
> Any one here can me............ ?

Well the dullards in your class will doubtless
furnish an algorithmic solution using something
called a 'loop'.

The brighter students will realise that there is
an analytic solution, and write a program to
calculate this directly.

However, since you are in a C++ class I feel
confident that your professor will settle for
nothing short of a compile-time solution using
metaprogramming that spits out the answer in
an error message - let's face it, you can't beat
a program for speed that doesn't even produce
an .exe, as I'm sure you'll agree.

Type the code below into a file called metasum.cpp
and then eg for x=5 and y=20, compile the code like
this:
cl /c metasum.cpp -Dx=5 -Dy=20

The first part of the error message will give
you the answer to the problem (here, 109):

metasum.cpp
metasum.cpp(10) : error C2079: 'ans' uses
undefined struct 'the_answer_is<__formal>'
with
[
__formal=109
]
:

If this doesn't get you an A then there's something
very wrong with all of us.

<code>
typedef unsigned int u;

template<u> struct the_answer_is;

template<u a, u b, u c >
struct sx {
sx() {
the_answer_is<(b/2+1)*(b/2)-(a/2-1)*(a/2)+c>
ans;
}
};

template<u a, u b, u aa, u bb> struct s;

template<u a, u b>
struct s<a,b,0,0> : sx<a,b,0> {
s() : sx<a,b,0>() {}
};
template<u a, u b>
struct s<a,b,0,1> : sx<a,b-1,b> {
s() : sx<a,b-1,b>() {}
};
template<u a, u b>
struct s<a,b,1,0> : sx<a+1,b,a> {
s() : sx<a+1,b,a>() {}
};
template<u a, u b>
struct s<a,b,1,1> : sx<a+1,b-1,a+b> {
s() : sx<a+1,b-1,a+b>() {}
};
template <u a, u b>
struct sum : s<a, b, a%2, b%2> {};

sum<x,y> eval;

</code>

tragomaskhalos wrote:
> On 18 Oct, 10:56, zohaib.shir...@gmail.com wrote:
>> i have got a quizz to write a programm that gives the sum of all even
>> numbers between two variables x and y and then displays the sum.
>> Include both x and y in the total sum.
>>
>> Any one here can me............ ?
>
> Well the dullards in your class will doubtless
> furnish an algorithmic solution using something
> called a 'loop'.
>
> The brighter students will realise that there is
> an analytic solution, and write a program to
> calculate this directly.
>
> However, since you are in a C++ class I feel
> confident that your professor will settle for
> nothing short of a compile-time solution using
> metaprogramming that spits out the answer in
> an error message - let's face it, you can't beat
> a program for speed that doesn't even produce
> an .exe, as I'm sure you'll agree.
>
> Type the code below into a file called metasum.cpp
> and then eg for x=5 and y=20, compile the code like
> this:
> cl /c metasum.cpp -Dx=5 -Dy=20
>
> The first part of the error message will give
> you the answer to the problem (here, 109):
>
> metasum.cpp
> metasum.cpp(10) : error C2079: 'ans' uses
> undefined struct 'the_answer_is<__formal>'
> with
> [
> __formal=109
> ]
> :
>

How can the sum of even numbers be odd?

On 18 Oct, 22:28, red floyd <no.s...@here.dude> wrote:
> tragomaskhalos wrote:
> > On 18 Oct, 10:56, zohaib.shir...@gmail.com wrote:
> >> i have got a quizz to write a programm that gives the sum of all even
> >> numbers between two variables x and y and then displays the sum.
> >> Include both x and y in the total sum.
>
> > metasum.cpp
> > metasum.cpp(10) : error C2079: 'ans' uses
> > undefined struct 'the_answer_is<__formal>'
> > with
> > [
> > __formal=109
> > ]
> > :
>
> How can the sum of even numbers be odd?

Note that the problem says "include both x and y in
the total sum", so if either end point is odd ...

Anyway I realised that that code was needlessly
verbose; this does the job just as well:

typedef unsigned int u;
template<u> struct the_answer_is;

template<u a, u b, u c >
struct sx {
sx() {
the_answer_is<(b/2+1)*(b/2)-(a/2-1)*(a/2)+c>
ans;
}
};

template <u a, u b>
struct sum : sx<a+a%2, b-b%2, a*(a%2)+b*(b%2)> {};

sum<x,y> eval;

On 2007-10-18 18:35:27 -0400, tragomaskhalos
<dave.du.vergier@logicacmg.com> said:

> On 18 Oct, 22:28, red floyd <no.s...@here.dude> wrote:
>> tragomaskhalos wrote:
>>> On 18 Oct, 10:56, zohaib.shir...@gmail.com wrote:
>>>> i have got a quizz to write a programm that gives the sum of all even
>>>> numbers between two variables x and y and then displays the sum.
>>>> Include both x and y in the total sum.
>>
>>> metasum.cpp
>>> metasum.cpp(10) : error C2079: 'ans' uses
>>> undefined struct 'the_answer_is<__formal>'
>>> with
>>> [
>>> __formal=109
>>> ]
>>> :
>>
>> How can the sum of even numbers be odd?
>
> Note that the problem says "include both x and y in
> the total sum", so if either end point is odd ...
>
> Anyway I realised that that code was needlessly
> verbose; this does the job just as well:
>
> typedef unsigned int u;
> template<u> struct the_answer_is;
>
> template<u a, u b, u c >
> struct sx {
> sx() {
> the_answer_is<(b/2+1)*(b/2)-(a/2-1)*(a/2)+c>
> ans;
> }
> };
>
> template <u a, u b>
> struct sum : sx<a+a%2, b-b%2, a*(a%2)+b*(b%2)> {};
>
> sum<x,y> eval;

Nice. It didn't work on g++ v.4.0.1, but I see what you're trying to do.

--

-kira

THANX every1 4.............................