Question

Sum of all even fibonacci numbers below 4000000 c++

Answer 1

Answer:

#include<iostream>

#include<cstdlib>

using namespace std;

int main() {

int a=1,b=1,c,sum=0;

   while(c<4000000)

   {

       c=a+b;

       if((c%2)==0)

       sum+=c;

       a=b;

       b=c;

   }

    cout<<sum;

   return 0;

}

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Explanation: