Step Form Algorithm:

• Start.
• Declare the required variables.
• Indicate the user to enter the coefficients of the quadratic equation by displaying suitable sentences using printf() function.
• Wait using the scanf() function for the user to enter the input.
• Calculate the roots of quadratic equation using the proper formulae.
• Display the result.
• Wait for user to press a key using getch() function.
• Stop.

Pseudo Code Algorithm:

• Start.

• Input a, b, c.

• D ← sqrt (b × b – 4 × a × c).

• X1 ← (-b + d) / (2 × a).

• X2 ← (-b - d) / (2 × a).

• Print x1, x2.

• Stop.

Flowchart:

Flowchart to calculate the roots of quadratic equation is shown below in figure 3.

program

import math

days_driven = int(input("Days driven: "))
while True: 
   code = input("Choose B for clas B, C for class C,D for class D, or Q to Quit: ")

# for class D
if code[0].lower() == "d":
   print("You chose Class D")

   if days_driven >=8 and days_driven <=27:
      amount_due = 276 + (43* (days_driven - 7))
   elif days_driven >=28 and days_driven <=60:
      amount_due = 1136 + (38*(days_driven - 28))
   else:
      print("Class D cannot be rented for less than 7 days")

   print('amount due is $', amount_due)
       break

    elif code[0].lower() == "c":
       print("You chose class C")
       if days_driven \gt= 1 and days_driven\lt=6:
          amount_due = 34 * days_driven
       elif days_driven \gt= 7 and days_driven \lt=27:
          amount_due = 204 + ((days_driven-7)*31)
       elif days_driven \gt=28 and days_driven \lt= 60:
          amount_due = 810 + ((days_driven-28)*28)
       print('amount due is $', amount_due)  


# for class b
elif code[0].lower() == "b":
    print("You chose class B")
    if days_driven >1 and days_driven<=6:
        amount_due = 27 * days_driven
    elif days_driven >= 7 and days_driven <=27:
        amount_due = 162 + ((days_driven-7)*25)
    elif days_driven >=28 and days_driven <= 60:
        amount_due = 662 + ((days_driven-28)*23)
    print('amount due is $', amount_due)   
    break

elif code[0].lower() == "q":
    print("You chose Quit!")
    break

else:
    print("You must choose between b,c,d and q")
    continue