Write a program in C including three functions namely main, C2F, and F2C. The main function asks the user to enter 'C' for converting Celsius to Fahrenheit (C2F) or 'F' for converting Fahrenheit to Celsius (F2C). Thereafter, it reads the degree and calls one of the C2F and F2C functions for conversion. The C2F and F2C functions receive a degree and return the converted degree.