Can someone pls explain this step by step?? This question was in sololearn but I changed sum=1

Question

#include <iostream>
using namespace std;

int main()
{
int arr[] = {11, 35, 62, 555, 989};
int sum = 1;

for (int x = 0; x < 5; x++) {
sum += arr[x];
}

cout << sum << endl;

return 0;
}

Answer 1

When sum=0 //output 1652
When sum=1 //output 1653

What did I say in my previous answer. Come on its basic maths.

Answer 2

Your answer would have increased by 1 when you made sum=1 when compared to sum=0.

Answer 3

Read this

https://www.sololearn.com/learn/CPlusPlus/1616/

Answer 4

When sum=0 I found the solution
But when I tried to do it with 1 ,I got stuck
I don't know if i got my theory wrong
Plss help

Answer 5

What was the result you expected? And what happened instead?

Answer 6

The output is 1653

Answer 7

Is this how you do it?
Loop 1# x=0
0<5=true
( X=x+1 )x=0+1=1
Sum=sum+arr[0]
=1+11
=12

Loop 2# x=1
1<5 =true
X=1+1=2
Sum=1+arr[1]
...
I don't know if that's how it is??

Answer 8

sum gets the salue you start from. Say it's 0.

Then, with each run of the loop, arr[i] is added to sum.

If you give sum a higher initial value, the end result will naturally also be higher.

So if you set sum to 1 before the loop, the result will be 1 higher.