#Gage Jackson #November 15, 2021 #U3M2A2.1 #Boolean Expressions and Compound Conditionals

# not operator print("not True = ", not True) print("not False = ", not False)

# and operator print("False and False = ", False and False) print("False and True = ", False and True) print("True and False = ", True and False) print("True and True = ", True and True)

# or operator print("False or False = ", False or False) print("False or True = ", False or True) print("True or False = ", True or False) print("True or True = ", True or True)

print("True and not False =", True and not False) print("False or not True = ", False or not True)

# [ ] Use relational and/or arithmetic operators with the variables x and y to write: # 3 expressions that evaluate to True (i.e. x >= y) # 3 expressions that evaluate to False (i.e. x <= y) x = 84 y = 17 print("true expressions") print(x>y) print(x>=y) print(y<x) print(x!=y) print("false expressions") print(x==y) print(x<y) print(x<=y) print(not(x>y))

# [ ] Use the basic Boolean operators with the variables x and y to write: # 3 expressions that evaluate to True (i.e. not y) # 3 expressions that evaluate to False (i.e. x and y) x = True y = False print("true expressions") print(x or y) print(not y) print(x and not y) print("false expressions") print(x and y) print(not x) print(not x and y)

# Testing if x is outside the range [10, 20] x = 11 (x < 10) or (x > 20)

# Testing if x is outside the range [10, 20] x = 50 (x < 10) or (x > 20)

# Testing if x is a positive and odd number x = 11 (x > 0) and (x % 2 != 0)

# Testing if x is a positive and odd number x = -11 (x > 0) and (x % 2 != 0)

# Testing if x is a positive and odd number x = 22 (x > 0) and (x % 2 != 0)

# Driver information name = 'Colette' age = 17 # Testing if name starts with `C` and the age is 18 or less (name.startswith('C')) and (age <= 18)

# Driver information name = 'John' age = 17 # Testing if name starts with `C` and the age is 18 or less (name.startswith('C')) and (age <= 18)

# [ ] Write an expression to test if x is an even number outside the range [-100, 100] # Test your expression with: # x = 104 (True) # x = 115 (False) # x = -106 (True) # x = -99 (False) x=int(input("please enter a number: ")) (x % 2 == 0) and ((x < -100) or (x > 100))

# [ ] Write an expression to test if a string s starts and ends with a capital letter # HINT: You might find the function `str.isupper()` useful # Test your expression with # s = "CapitaL" (True) # s = "Not Capital" (False) s=input("please enter a string: ") s[0].isupper() and s[-1].isupper()

# [ ] Write an expression to test if a string s contains a numerical value # then test if the value is greater than the value stored in x # HINT: Use the functions `s.isnumeric()` and `float(s)` # Test your expression with # s = "39" # x = 24 # Expression should yield True # s = "a39" # x = 24 # Expression should yield False s=input("please enter a number: ") x=24 if s.isnumeric(): if float(s)>x: print("is number greater than x") else: print("is not number")

x = 11 (x >= 10) and (x <= 20)

x = 30 (x >= 10) and (x <= 20)

x = 11 not((x < 10) or (x > 20))

x = 30 not((x < 10) or (x > 20))

# [ ] Write an expression equivalent to the one below # to test if x is outside the range [10, 20] (seen in a previous example) # (x < 10) or (x > 20) # Test your expression with # x = 11 (False) # x = 50 (True) x = int(input("enter 11 or 50: ")) not((x>10) and (x<20))

# [ ] Write a second expression to test if x is an even number outside the range [-100, 100] # Do NOT use the expression you wrote for a previous exercise # Test your expression with: # x = 104 (True) # x = 115 (False) # x = -106 (True) # x = -99 (False) x=int(input("enter 104, 115, -106, or -99: ")) not((x % 2 != 0) or ((x > -100) and (x < 100)))

# Solicit user input x = input("Enter an odd positive number: ") # Convert the string input into int x = int(x) # Test number for validity if ((x > 0) and (x % 2 != 0)): print(x, "is a valid number") else: print(x, "is NOT a valid number")

# Solicit user input y = input("Enter your birth year: ") # Convert the string input into int y = int(y) # Check the decade membership if (y < 1970): print("You were born before 1970!") elif (y >= 1970 and y < 1980): print("You were born in the 70s!") elif (y >= 1980 and y < 1990): print("You were born in the 80s!") elif (y >= 1990 and y < 2000): print("You were born in the 90s!") elif (y >= 2000 and y < 2010): print("You were born in early 2000s!") else: print("You were born in the current decade!")

# [ ] Write a program to validate that user input is outside the range [0, 100] if(x<0 and x>100): print("correct input") else: print("incorrect input")

# [ ] Write a program to ask a user for her/his BMI index, then display the user's BMI category x=float(input("please enter your bmi: ")) if (x <= 18.5): print("underweight") elif (x >= 18.5 and x <= 24.9): print("normal weight") elif (x >= 25 and x <= 29.9): print("overweight") elif (x >= 30): print("obese") else: print("please enter only one decimal")