#Name:
#Date: 6 November 2014
#Assignment: While Loop

def ohms_law():
    print "Simple Text Ohm's Law Calculator"
    #user input
    responseLoop = raw_input("Do you wish to perform a calculation? ('yes' or 'no') ")
    #while loop
    while responseLoop == "yes":
        responseOhm = input("Enter 1 for voltage, 2 for current, or 3 for resistance: ")
        if (responseOhm == 1):
            current = input("Please enter the current: ")
            resist = input("Please enter the resistance: ")
            volts = current * resist
            print  "The voltage is:" , volts
        elif (responseOhm == 2):
            volts = input("Please enter the voltage: ")
            resist = input("Please enter the resistance: ")
            current = volts/resist
            print "The current is:" , current
        elif (responseOhm == 3):
            volts = input("Please enter the voltage: ")
            current = input("Please enter the current: ")
            resist = volts/current
            print "The resistance is:" , resist
        else:
            print "Invalid response."
        responseLoop = raw_input("Do you wish to perform another calculation? ('yes' or 'no') ")
    print "End of program.”

if __name__ == '__main__':
    ohms_law()