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))

z = 2.0
print('z' * 3, z * 3, '2.0' * 3, str(z) * 3)
print((float('2.0') * 3) * 3)

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



# write code to get a number from a user
# and evaluate and display whether the given number
# is odd or even.
# That is, print True if is it even
# other print False

# print(bool(int(input("Give a number: ")) % 2)==0)



### answer ###
# /Users/up3f/PycharmProjects/cs1111/venv/bin/python /Users/up3f/PycharmProjects/cs1111/exam-review/e1-recap-1-solution.py
# Guess a number: 6
# False
# Guess a number: 4
# False
# Guess a number: 19
# False
# 144 <class 'int'>
# Traceback (most recent call last):
# 144.0 <class 'float'>
# 12.0 <class 'float'>
# 12 <class 'str'>
# 2.4 <class 'float'>
# 2 <class 'int'>
#   File "/Users/up3f/PycharmProjects/cs1111/exam-review/e1-recap-1-solution.py", line 42, in <module>
# 2 <class 'int'>
# zzz 6.0 2.02.02.0 2.02.02.0
#     print(int('12.5'))     # What is wrong?
# 18.0
# 12
# ValueError: invalid literal for int() with base 10: '12.5'
# 12
#
# Process finished with exit code 1