Hello, Ada!
Hi, Bob!
Hey, Cy?
square 5  = 25
rect 5x3  = 15
total()       = 0
total(1,2,3,4)= 10
nums: [1, 2, 3]
a=10 b=20 c=30
head=1 tail=[2, 3, 4, 5]
Ada the engineer
min=1 max=9
count=4 sum=20
after swap: p=2 q=1
first=10 more=[20, 30, 40]
point: 3,4
