[purfier]

Can someone please help me with this... Is it possible to compare two numbers without using "if", or conditional operators or relational operators or pre-defined functions in C? I thought of using the bitwise operators but i don't exactly know how to implement it...

[mohoo]

supposed :A is one numberm,and B is the another one.
the result of |A-B|+|B+A| is the larger one

ps: the symbol ' | |' represents the operation of getting the absolute value .

[gab00n]

There is nothing wrong with using if statements or anything else. Is this for a school project or are you just curious? Do you want to compare these two number for equality or to see which is larger, or both? That equation does not make sense.
let A = 4 and B = 6
|4-6| + |6+4| = 12 how does that answer tell you which letter it corresponds to. I see that the answer divided by 2 would give you the highest number, but how would you be able to tell if it was A or B without using if statements?

[purfier]

Actually, its just a puzzle like thing read in some book... And, yes that equation unless divided by two doen't give the largest of the two numbers...

Now, suppose i were given a negative number and a positive number... The equation... it won't work...
For instance, take 3 and -5 then (|3+(-5)| + |3-(-5)|)/2 gives me (|-2| + |8|)/2 which finally reduces to 5...but this is wrong.. The answer should be 3 right??

[mohoo]

Originally posted by gab00n
There is nothing wrong with using if statements or anything else. Is this for a school project or are you just curious? Do you want to compare these two number for equality or to see which is larger, or both? That equation does not make sense.
let A = 4 and B = 6
|4-6| + |6+4| = 12 how does that answer tell you which letter it corresponds to. I see that the answer divided by 2 would give you the highest number, but how would you be able to tell if it was A or B without using if statements?

Thank you for finding my careless mistake.

Yes,that should be divided by 2.

(|A-B|+|A+B|)/2

[mohoo]

Originally posted by purfier
Actually, its just a puzzle like thing read in some book... And, yes that equation unless divided by two doen't give the largest of the two numbers...

Now, suppose i were given a negative number and a positive number... The equation... it won't work...
For instance, take 3 and -5 then (|3+(-5)| + |3-(-5)|)/2 gives me (|-2| + |8|)/2 which finally reduces to 5...but this is wrong.. The answer should be 3 right??

:eek:it's my mistake.you are right.i havenot taken that instance into account. so sorry.

let me think out it again.

[mohoo]

Mmmm,

A+B+|A-B|

does this work?

[stanley_robert]

A+B+|A-B| also doesnot work i think
If A=5 and B=7 then
A+B+|A-B| gives 5+7+|5-7| = 12 + 2 = 14
But the answer should be 7 ... right ?

So i think , it should be
(A+B+|A-B|) / 2
which gives 7.. the exact answer
Another example
-5 and 2
(-5+2+|-5-2|)/2
(-3 + 7)/2
4/2
2
which is correct answer...!

I think.. this is the correct procedure !

[purfier]

Yes... stanley_robert... You are indeed right...got the procedure...thank you very much...

[mohoo]

oh,my god,i forget '/2' again.