Variables

Floating point would probably be best for a real application, but, to simplify things let us:

• Convert the input string to an int variable.
• Evaluate the formula using integer arithmetic.
• Save the result as an int variable.

This work will by done by the convert() method. Here is a sketch of the code:

// The application
public int convert( int F )  
{
  return ( (F-32) * 5 ) / 9;
}

You could continue on from here and develop a non-GUI application where the main() method does input and output with the keyboard and monitor. You might do this if you wanted to debug the application code first before working on the GUI. However, this example will do input and output with GUI components.