x = input("Guess a number: ") == 7
print(x)

x = input("Guess a number: ") == '7'    # compare string and string
print(x)

x = int(input("Guess a number: ")) == 7   # compare int and int
print(x)

# what data type does the input() function return?
# how does == work?
# when should you do casting?

# --------------------------------- #
y = 12
z = y ** 2
print(z, type(z))

z = y ** 2.0
print(z, type(z))

z = float(y)
print(z, type(z))
z = str(y)
print(z, type(z))

z = y / 5      # natural division, always result in float
print(z, type(z))

z = y // 5     # integer division
print(z, type(z))

z = y % 5     # remainder
print(z, type(z))

print(max("frog", "gorf"))
print(max(9, 9.0))
print(len("frog"))
# print('len of int = ', len(9))         # What is wrong?
# print('len of float = ', len(9.0))     # What is wrong?
print('len of string = ', len(str(9)))


print(int(12.5))
print(int('12'))
# print(int('12.5'))     # What is wrong?
print(int(float('12.5')))

# int(...string...) works if string looks like int
# float(...string...) works if string looks like float