Checking For Element Position in Array and Printing New Line After Checking

So I've written this code and it works until I try implemented a part of my second for loop where I try to print a new line. It is suppose to print a new line when it comes across the 8th position in the array. Any help appreciated.

// Construct a for loop that runs backwards through the array,
// starting at the last element and ending at the first.

 for (int i = arraySize; i > 0; i--) {

    // Inside this for loop, print the ith element of the array
    // and a tab, with NO newline characters.
    cout << newArray[i-1] << "  ";

    // If this element is the 8th one on its line, print a
    // newline character to advance to the next line.
    // Also inside this for loop, add the value of the ith
    // element to the current value of the double for the sum
    // of elements.

    //ISSUE IS HERE
    if (newArray[i-8] = newArray[7]) {
        cout << "\n";
    }

    sumOfElements += newArray[i-1];

}

I've only pasted the for loop that has the issue, I don't believe any other information is necessary as I know it works up until this point.