My 1st C++ problem question

Question

What is the output of this code?
int b[ ]={1,4,2,7,3};
int sum=0;
for(int i=0; i<5; i++){
if(i%2==0)
sum += b[i];
}
cout<<sum;

My answer is 2 but the real answer is 6 ，why？🤔Thanks for your help.

Answer 1

It runs though the array, and adds each one to the total, but only when the index is even. So what it's adding is b[0], b[2], and b[4]. and the sum is equal to 1 + 2 + 3 = 6.

Answer 2

Hi Alice... You've been asking some great questions to learn more about challenges. In case you weren't aware, you can show your appreciation for these great explanations by marking the best answer with a green checkmark. :)

Answer 3

@ David Caroll Yes，I executed your order😜

Answer 4

Oops...I thought we stopped when the index was even 😓 Thanks Thumb up