Traffic lights simulator 🚦

This programme simulates behavior of traffic lights by use of state machine.

Possible states:

• <State 1> Cars: green, pedestrians: red
• <State 2> Cars: yellow, pedestrians: red
• <State 3> Cars: red, pedestrians: green

Possible transitions:

• <State 1> ➡️ <State 2> after 10 seconds
• <State 2> ➡️ <State 3> after 20 seconds or after pushing button*
• <State 3> ➡️ <State 1> after 2 seconds

⚠️ button pushed during period when pedestrians have green light does not count

pushing button is simulated by not empty input from keyboard