#explain AND, OR, NOT - google for truth table

x = 30
y = 3
result = (x == 30) # True
print(result)

result = (x != 30) # False
print(result)

result = (x == 30 and y == 3) # True
print(result)

result = (x != 30 and y == 3) # False
print(result)

result = (x == 30 and y != 3) # False
print(result)

result = (x != 30 and y != 3) # False
print(result)

result = (x == 30 or y == 3) # True
print(result)

result = (x != 30 or y == 3) # True
print(result)

result = (x == 30 or y != 3) # True
print(result)

result = (x != 30 or y != 3) # False
print(result)

print("----------------")
x = -10;
if x < 0:
    pass # Do nothing, Python special
else:
    print(x)

print("----------------")
#floating point equality
#floating-point numbers inherently are imprecise, problem with ==
a = 1.11 - 1.10
b = 2.11 - 2.10
print('a =', a, ' b =', b)
if a == b:
    print('Same')
else:
    print('Different')

print("----------------")
#to solve the problem
a = 1.11 - 1.10
b = 2.11 - 2.10
print('a =', a, ' b =', b)
diff = a - b # Compute difference
if diff < 0: # Compute absolute value
    diff = -diff
    
if diff < 0.0000001: # Are the values close enough?
    print('Same')
else:
    print('Different')

print("----------------")
#elseif
a = 40
b = 33
if b > a:
  print("b is greater than a")
elif a == b:
  print("a and b are equal")
else:
  print("a is greater than b")


print("----------------")
value = int(input("Please enter an integer in the range 0...3: "))
if value < 0:
    print("Too small")
else:
    if value == 0:
        print("zero")
    else:
        if value == 1:
            print("one")
        else:
            if value == 2:
                print("two")
            else:
                if value == 3:
                    print("three")
                else:
                    print("Too large")
print("Done")