#Type casting
num = 5
num_string = '123'
print(num + int(num_string))
print('My favorite number is ' + str(num))
print('My favorite number is {}'.format(num))

#Math functions
import math
print('The square root of 4 is {}'.format(math.sqrt(3)))
print(math.exp(10))

#Composition
#Adding new functions
#Parameters and arguments
#Scope
#Stack diagrams
#Fruitful functions/Void functions
#Why functions?
