Modify the temperature conversion program so that it converts Celsius to Fahrenheit. Use the formula:
Click here to go back to the main menu.fahr = celsius*9/5 + 32
Add two buttons to the temperature conversion program. Clicking one button converts Fahrenheit to Celsius, clicking the other converts Celsius to Fahrenheit. Add a "clear" button that clears the text in both text fields.
Click here to go back to the main menu.
Modify the calories from fat calculator so that it does
not crash when the user enters text that cannot be converted to a double.
You might have to look ahead to chapters 80 and 81 for this,
or look at the modification done with the temperature converter and
try to do something similar.
Further modify the calories from fat calculator so that it
includes another TextField that will be set with the text
"Too many fat calories" if the percentage of calories from fat is equal or greater
than 30 percent, or to "Healthy amount of fat" if the percentage is
less than that.