Solve my program

[Mika]

Hi its me again Mika,

I need a help again. Could you answer my problem,please? Our instructor give us another problem, he state: Create a recursive function that will calculate the sum of all odd integers from 1 up to a particular given number.
Thank you very much...

[CJSLMAN]

• You have posted in the wrong part of the forum. This should probably be in the "New to Java" section. The mods can move it.
• You probably already know this, but the forum won't do your assignment for you. The forum will help you to learn how to do it. To get you started, here's a way to detect if a number is odd/even:

if (x % 2 == 0) // number is even

or

if (x % 2 != 0) // number is odd

Do you know how/why the above code works ?

Luck,
CJSL

[Thennarasu]

(i%2!=0) is the condition used to do this operation

[Webuser]

(i%2!=0) is the condition used to do this operation

it is quite strange for usually (i%1!=0) has been used. Try out the question

[sari]

If you divide x by 1 It will always equal It self so there will be no remainder
Example below

int x = 5;
System.out.println(x % 1);

Writes on the command line 0 because there is no remainder

int x = 5;
System.out.println(x % 2);

Writes on the command line .5 because .5 is the remainder of 5 / 2

The Modulus(%) function finds the remainder of a division .
but I would hope that you already knew that.

Hope that helps,
Sari

[CJSLMAN]

Actually that's not entirely true... it prints 1, not .5. The reason being because:

• the remainder of 5/2 is not .5, it's 1

CJSL

[sari]

I'm disappointed in myself messing up basic math oh well I think I got the point across

[Thennarasu]

simple solution...
multiplication is related with addition,
division is related with subtraction,
modulo is the remainder...

for example,
2*5 is 10
how, 2+2+2+2+2 is 10...

similarly division
5/2 is 2 because you can subtract 2 only 2 times from 5
(1st time)5-2=3 (3 remainder)
(2nd time)3-2=1 (1 remainder)

so, 5/2 is 2 and the remainder is modulo(%)...here its 1.
understand the logic its very important...