Explanation needed

Question

int result = 0
for (int i = 0; i < 5; i++) {
if i == 3 {
result += 10
} else {
result += i
}
}

System.out.printIn(result);

17

Why result is 17 — could you explain please

Answer 1

i=0 else > res=0
i=1 else > res=1
i=2 else > res=3
i=3 if > res =13
i=4 else > res = 17
end
+= adds right value to left.

Answer 2

Thanx!