Using advanced math

In this recipe, you will learn how to use multiple math operations in a single line of LiveCode script. You will use operator precedence and nested operations. To facilitate this, we will use the common math trick where a person is asked to choose a number, and then perform the following operations on that number, the result always being 3:

1. Choose a number.

2. Add 5.

3. Double the result.

4. Subtract 4.

5. Divide the result by 2.

6. Subtract the number you started with.

   The result is always 3

How to do it...

Follow the steps in this recipe to program a multiple-step mathematical operation:

1. Open LiveCode and create a new main stack.

2. Set the background color of the default card to black.

3. Drag a button to the card and set the following properties:

   • Name: btn_GetNumber

   • Label: Choose a Number

   • Width: 122

   • Height: 23

   • Location: 71, 29

   • threeD: Keep this unchecked

   • backgroundColor: White

4. Drag a new text entry field to the card and set the following properties:

   • Name: fld_nbr1

   • Width: 88

   • Height: 31

   • Location...