this is in c programming lanuage

This is the problem I was given Initially, your program should ensure that all of the 6 LEDs are off(3red 3 green). Each time Switch 1 is pressed, one of the red LEDs that is off should be turned on. Each time Switch 2 is pressed, one of the green LEDs that is off should be turned on. Each time Switch 3 is pressed, one of the green LEDs that is on should be turned off and one of the red LEDs that is on should also be turned off.

I have most of this working I am using a counter to count how many times the switch one and two have been pressed and turn on lights at the correct time I am wondering the pest was to implement switch 3. Do I need to store the state of each light and use a bunch of if statments? like if redled1 and redled2 is on and switch 3 is pressed turn off redled2. then if redled1 is on and switch 3 is pressed turn off redled1. Then do something similar for the green leds but turning them in instead.