Can't do addition of arrays with doubles?

Question

public class howTall {
public static void main(String[] args) {
double [] heights = {1.50, 1.60, 1.63, 1.79};
double sum=0.0;
for (double x=0.0; x<heights; x++) {
sum+=heights[x];
}
System.out.println(sum);

}
}

/*Outputs error*/

Answer 1

Use int for array index <x>, we can't refer to an array element using floating point type (double).

public class howTall {
public static void main(String[] args) {
double [] heights = {1.50, 1.60, 1.63, 1.79};
double sum = 0;
for (int x = 0; x < heights.length; x++) {
sum += heights[x];
}
System.out.println(sum);
}
}

Answer 2

You're welcome, glad if it helps : )

Answer 3

sorry, It's x<heights.length

Answer 4

Thanks. That was very helpful 👏