How can I make a for-loop with array of doubles?

Question

I'm trying to make a for-loop with an array of doubles, but it just doesn't work.

Here is the code:

double[] myDoubleArray = new double[10];
double piValue = 3.141592;

for (double i = 0; i < 10; piValue+) {
    myDoubleArray[i] += i;
}

System.out.println(myDoubleArray[2]);
System.out.println(myDoubleArray[5]);

Answer 1

Is this what you are trying to do?

for (int i=0; i < 10; ++i) {
    myDoubleArray[i] = Math.PI + i;
}

This populates your array of double values, starting with Pi, and incrementing by one for each of ten elements.

Answer 2

Actually for array indexing use int. You can follow below code

    double[] myDoubleArray = new  double[10]; 
    double piValue = 3.141592; 
    for (int i = 0; i < 10; i++) { 
          myDoubleArray[i] = piValue + i; 
    }
 System.out.println(myDoubleArray[2]);

 System.out.println(myDoubleArray[5]);

Answer 3

Even if your array if a double array, the indexes that correspond to each position are still int primitives.

double[] doubleArray = {2.45, 4.45};

for(int i = 0; i < doubleArray.length; i++) {
     System.out.println(doubleArray[i]); //Doing something with the double value
}