Research on Swift

Update this afternoon c++

Recently, I suddenly want to study swift, So I made this program .

effect ：

 

The third point is random

course ( It should be ios System or mac It works , Don't try anything else ) 

First open the app store , Search for Swift playgrounds, download

Then click the lower right corner to view all

Find out about me , Point acquisition

Then click in after downloading , It's my interface , You can modify the code yourself , It doesn't feel hard

Just look for yourself