1. Write the code to display a dialog box that asks the user to enter his or her desired annual income. Store the input in a double variable. 2. A program has a float variable named total and a double...

1. Write the code to display a dialog box that asks the user to enter his or her desired annual income. Store the input in a double variable.

2. A program has a float variable named total and a double variable named number. Write a statement that assigns number to total without causing an error when compiled.