# Noemi Cabrera # 30 September 2021 # In this lesson, I learned use the elif conditional in if/else statements, which helps to test # multiple conditions and see which one is true depending on the input. I also practiced casting/ # converting from one data type to another by using int(), str(), and float(). This is important # because data types can only be added with the same data type, if not, an error will display. # I did not have any difficulties in this lesson.

# [ This code asks for user input on the weather. The if/else statement is combinated with the # elif statement to check for the different weather options: sunny, rainy, and snowy. # Only the condition that is true will display and the others are ignored. ] # review the code then run testing different inputs # WHAT TO WEAR weather = input("Enter weather (sunny, rainy, snowy): ") if weather.lower() == "sunny": print("Wear a t-shirt") elif weather.lower() == "rainy": print("Bring an umbrella and boots") elif weather.lower() == "snowy": print("Wear a warm coat and hat") else: print("Sorry, not sure what to suggest for", weather)

# [ This code asks the user to guess a secret number. The if/else statement is combinated with the # elif statement to check if the user entered a digit, if the user got the secret number, or if # the number entered was too low or too high. Only the condition that is true will display and the # others are ignored. ] review the code then run testing different inputs # SECRET NUMBER GUESS secret_num = "2" guess = input("Enter a guess for the secret number (1-3): ") if guess.isdigit() == False: print("Invalid: guess should only use digits") elif guess == "1": print("Guess is too low") elif guess == secret_num: print("Guess is right") elif guess == "3": print("Guess is too high") else: print(guess, "is not a valid guess (1-3)")

# [This program asks for user input on shirt size to check if the size is available, # and if available, it displays the cost of the shirt. Only the condition that is true will # display and the others are ignored. ] # SHIRT SALE shirt_size = input("Enter your shirt size (S,M,L): ").capitalize() if shirt_size == "S": print("Small = $6") elif shirt_size == "M": print("Medium = $7") elif shirt_size == "L": print("Large = $8") else: print(shirt_size, "is not available.")

# In this code, the 2 variables used have different data types. One is a string and the other # is an integer. In order to add these variables together they have to be both integers, so the # int() function is used to convert the variable weight1 into an integer. weight1 = '60' # a string weight2 = 170 # an integer # add 2 integers total_weight = int(weight1) + weight2 print(total_weight)

# The 3 variables in this code do not have the same data type, so they cannot be added together. # Therefore, the int()function casts the 2 variables with strings to integers. str_num_1 = "11" str_num_2 = "15" int_num_3 = 10 total = int(str_num_1) + int(str_num_2) + int_num_3 print(total)

# The 3 variables in this code do not have the same data type, so they cannot be added together. # Therefore, the str()function casts the 1 variable with an integer to a string. The result # is displayed. str_num_1 = "11" str_num_2 = "15" int_num_3 = 10 total = str_num_1, str_num_2, str(int_num_3) print(total)

# This program adds 2 variables together. Since str_integer contains a string, it's casted to a # string by using the function int() so that it can be add with int_number. The total displays. str_integer = "5" int_number = 11 number_total = int(str_integer) + int_number print(number_total)

# [ This code asks for the age of a student. Since input always returns as a string, it's casted # to an integer so that it can be added with the integer 1. The age of the student next year # is displayed.] review and run code student_age = input('enter student age (integer): ') age_next_year = int(student_age) + 1 print('Next year student will be',age_next_year)

# [ This code also asks for the age of a student. However, the input is casted to an integer # by putting it inside the int() function. Then, the age entered is added 10 to display # the age of the student in a decade.] review and run code # cast to int at input student_age = int(input('enter student age (integer): ')) age_in_decade = student_age + 10 print('In a decade the student will be', age_in_decade)

# This program asks the user to enter 2 numbers they want to add. Then the input is casted to # integers so that they can be added to get a result. # The addition and result is displayed. first = input("Enter a number:") second = input("Enter a number you want to add to the previous one: ") addition = int(first)+ int(second) print(first,"+",second,"=",addition)