Euler Q1 C++ code

Eric Kivuti erickivuti at gmail.com
Wed Jul 23 07:41:05 BST 2008


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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