# 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))
3 + 5 = 8
3 + 5 - 9 = -1
48/9 = 5.333333333333333
5*5 = 25
(14 - 8)*(19/4) = 28.5
# [ 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())
Now you have 5000000
# This code displays the result of subtracting 15 from 43.
print(43-15)
28
# This code displays the result of multiplying 15 and 43.
print(15*43)
645
# This code displays the result of dividing 156 by 12. The answer is always a float.
print(156/12)
13.0
# This code displays the result of dividing 21 by 0.5.
print(21/0.5)
42.0
# This code displays the result of adding 111 and 84, and then substracting 45.
print(111+84-45)
150
# 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)
100
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()
5 * 5 = 25
# 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 a calculator for multiplication and division
# [ 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.")
Noemi please wait for students with names staring with 'F' and 'G' to go first today.