# Noemi Cabrera # 28 September 2021 # In this lesson, I learned to use the basic math operators when wrting code. # The order of operations for regular math is the same in Python. I also practiced casting numeric user input to # integer form. I learned that you can code more than two choices in if/se statements by using the elif. Lastly, # I practiced creating functions that included math operations, if/else statements, and type casting. # The difficulties I had were with improving the multiplying calculator function in Task 3. I didn't know how to # use the elif keyword in if/else statement until the next lesson. # But when I learned how, I figured out that I had to use it to test the multiple conditions (opertor is /, *, # or Invalid) and display the result if the operator is not invalid.

# [ This code displays an string containing a math operation followed by the results of the operation. # Like in regular math, order of operations is followed. ] review and run example print("3 + 5 =",3 + 5) print("3 + 5 - 9 =", 3 + 5 - 9) print("48/9 =", 48/9) print("5*5 =", 5*5) print("(14 - 8)*(19/4) =", (14 - 8)*(19/4))

# [ In this code, the function million_maker() is defined. It asks the user for input on a number and then it # makes it a million by multiplying it by 10000000. The function is called an the result is displayed.] # review and run example - 'million_maker' def million_maker(): make_big = input("enter a non-decimal number you wish were bigger: ") return int(make_big)*1000000 print("Now you have", million_maker())

# This code displays the result of subtracting 15 from 43. print(43-15)

# This code displays the result of multiplying 15 and 43. print(15*43)

# This code displays the result of dividing 156 by 12. The answer is always a float. print(156/12)

# This code displays the result of dividing 21 by 0.5. print(21/0.5)

# This code displays the result of adding 111 and 84, and then substracting 45. print(111+84-45)

# This code displays the result of adding 21 +4, and then multiplying that by 4. The parentheses are resolved # first and then the multiplication. print((21+4)*4)

def multiply(): one_num = int(input("enter 1 whole number: ")) two_num = int(input("enter another whole number you want to multiply by the previous one: ")) calc = one_num * two_num display = print(one_num,"*",two_num,"=",str(calc)) return display multiply()

# This program asks the user to enter 2 whole numbers so that they can be either multiplied or divided. Then, the # if/else statement contains the return value that will display depending on the statement that turns out to be # true. The default operator is multiplication, and it's used if no operator is specified. def multiply(operator= "*"): print("This a calculator for multiplication and division") one_num = int(input("enter first whole number: ")) two_num = int(input("enter second whole number: ")) if operator == "/": return one_num / two_num elif operator == "*": return one_num * two_num else: return "Invalid Operator" multiply("/")

# [ This code displayed a syntax error because the elif statement was missing a colon at the end. # To fix this, I added a colon at the end.] Review, run, fix student_name = input("enter name: ").capitalize() if student_name.startswith("F"): print(student_name,"Congratulations, names starting with 'F' get to go first today!") elif student_name.startswith("G"): print(student_name,"Congratulations, names starting with 'G' get to go second today!") else: print(student_name, "please wait for students with names staring with 'F' and 'G' to go first today.")