where do they get crypto prices in realtime code example

Example: How does my crypto get price

This question has been asked so many times and I decided to simplify it.
So after you make your cool coin:).To get worth you need to list on a good
Exchange eg. SouthExchange. Which will then have your crypto on the market.
If people buy your coin with bitcoin or lets say exchange one of your
cool coin:) for $2. It gets a price of $2 per coin. If someone sells it
down it goes and so on.Good job with making a cool coin anyway.

Have a good day.