The operator + is undefined for the argument type(s) String, void

Question

public class chap7p4 {
    public static void main(String[] args) {
        int[] heights = { 33, 45, 23, 43, 48, 32, 35, 46, 48, 39, 41, };
        printArray(heights);         


        

Answer 1

Your method findAverage(heights) has to return a value to be applicaable for the binary operator +, which takes two operants.