How do I use a range-based for loop to sum all elements

[357mag 3]

I've never used range-based for loops so I don't know how to write one that is keeping track of the sum of the elements in an array:

 

int main()
{
    int myArray[] = {2, 4, 7, 8, 9};

    cout << "The values in the array are: ";

    for(int n : myArray)
        cout << n << " ";

    int sum = 0;

    for(int x : myArray)
    {
        x += myArray[x]; // don't know what to write here
    }
    cout << "The sum is: " << x << endl; // use of undeclared identifier

    system("pause");
    return 0;
}

 

[Lajos Juhász 299]

It was a couple a decade ago when I wrote my previous C code. At that moment x is out of scope You should use sum to hold the result:

 

sum +=myArray[x]

 

cout << "The sum is: " << sum << endl; 

[357mag 3]

Something is still off. My console window is saying that sum is equal to 1985788.

[Fraser 2]

You want sum+=x;

[357mag 3]

Yes that works great. Thank You.

[Remy Lebeau 1442]

I find it interesting that you clearly knew how to access the element values in the 1st range-for loop, but didn't know how to do the exact same thing in the 2nd range-for loop.