help understanding the answer [x=58]

Question

public class Program {
public static void main(String[] args) {
int [ ] myArr = {6, 42, 3, 7};
int sum=0;
for(int x=0; x<myArr.length; x++) {
sum += myArr[x];
}
System.out.println(sum);
}

Answer 1

sum=sum+myArr[x];
sum=0+6;
sum=6+42;
sum=48+3;
sum=48+7;
output 58

Answer 2

yes the output is 58 but I don't understand why?

Answer 3

We are just looping through the array and adding the values of every index to the variable sum

Answer 4

the for loop. it is running thru the array of numbers. each time it sees a new number in the array it is adding it to the total.

Learn FOR LOOP.. Super useful and once you wrap your head around them very simple