Implement the following integer methods:

a)method celsius return the celsius equivalent of a fahrenheit temperature, using the calculation
celsius = 5.0/9.0*(fahrenheit -32);

b) method fahrenheit returns the fahrenheit equivalent of a celsius temperature, using the calculation
fahrenheit = 9.0/5.0*(celsius +32);

c)use the method from part (a) and (b) to write an application the enables the user either to enter a fahrenheit temperature and display the celsius equivalent or enter a celsius temperature and display the fahrenheit equivalent