Lesson 5 - Activity 2 - Can you add integers and doubles together?

🙋 Questions
1

Time: 15 minutes

Purpose: Exploring what happens when you mix decimal and integers

Introduction: You’ve done operations on two identical variable types. What happens when they’re not the same?

Task: Try adding an integer to a double number and printing the result

  1. Describe what happens
  2. Attempt to make the addition work by any means
2

Was playing around with how many decimal digits we can have :upside_down_face:

    int A = 1;
    double B = 2.9999999999999999;
    double C = 2.999999999999999;
    int D;
    double E;

    D = (int)B + (int)C;
    E = B + C;

    System.out.println(newLine + "INT    ---> " + (int)B + " + " + (int)C + " = " + D);
    System.out.println("DOUBLE ---> " + B + " + " + C + " = " + E);
    System.out.println("DOUBLE ---> " + (double)A + " + " + C + " = " + E);
3

Good work. You’ve got the basics.