C sharp please question has 3 parts

Temperature Conversions) Implement the following integer methods: a) Expression-bodied method Celsius returns the Celsius equivalent of a Fahrenheit tem- 7.22 ( perature, using the calculation 5.0/9.o*(f 32); b) Expression-bodied method Fahrenheit returns the Fahrenheit equivalent of a Celsius temperature, using the calculation 9.0/5.0 c+32 )to write an app that enables the user either to enter a Fahrenheit temperature and display the Celsius equivalent or to enter a Celsius temperature and display the Fahrenheit equivalent