please can this be done in C not c++ and can it have comments in the code to explain the structure of the code and can the variable names be atleast 6 characters long.

The code must find the resistance of the resistors in parallel first (R2 and R3) then add the resistor in series (R1) after to find the total resistance from A to B

Figure 1 Write a program that calculates the equivalent resistance between A and B of the circuit in Figure 1 . Provide a menu interface for users on how to enter resistor values and how to quit the program. The program must also check the validity of the data entered. Include a flowchart with your A1 program