Euler Q1 C++ code

[kinuthiA muchanE]

Eric,
Firstly, I think you are using an old version of c++, but that would not
prevent you from getting the correct answer ;). Secondly, the mistake
you are making is that you are incrementing sum twice, the question is
if an integer is a multiple of 3 OR 5. So, if you modify the condition
in the "while" loop to:

<code>
	if (n%3 == 0 || n%5 == 0) { 
		sum += n;
		}
</code>

... all should work well. The reason it is working with 10 is because
you are iterating over very few numbers, but as size of the number
increases things change!:-)

Does this help?
Kinuthia...
On Wed, 2008-07-23 at 09:41 +0300, Eric Kivuti wrote:
> This email is from a ubuntu-ke subscriber to other subscribers inluding you:)
> This is the code I used (cpp attachment available):
> 

> 0 mod 3 = 0
> 1 mod 3 = 1
> 2 mod 3 = 2
> 3 mod 3 = 0
> 
> so for all x mod 3 = 0
> */
> #include <iostream.h>
> void main(){
>  int n=1, sum=0;
>  while (n<10){
>   if((n%3)==0){
>    cout<<n<<", ";
>    sum+=n;
>   }
>   if((n%5)==0){
>    cout<<n<<", ";
>    sum+=n;
>   }
>   n++;
>  }cout<<"\n\nsum = "<<sum<<endl;
> }
> 
> Output:
> 
> 3, 5, 6, 9
> 
> Sum = 23
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