Ohm's law

Make a class describing a resistor with the following members:

• a private data member for the resistance, R
• a public member function to set the value of R
• a public member function to calculate the current I from the voltage E
• a public member function to calculate the voltage E from the current I
• a public member function to calculate the power dissipation P from the current I using the formula P = I·E, where E is calculated using the previous member function.

Make a program to test this class.