1. broken_speeding_ticket.py
2. eval_cond.py
3. grade_elif.py
4. grade_function.py
5. grade.py
6. speedingticket.py

# This is NOT a correct solution.  Why is it incorrect?
# What test cases reveal the errors?
# 
# Any speed clocked over the limit results in a fine of at least $50, plus $5
# for each mph over the limit, plus a penalty of $200 for any speed over 90mph.
# 
# Input: speed limit and the clocked speed
# Output: either (a) that the clocked speed was under the limit or 
# (b) the appropriate fine
#
# This program is equivalent to speedingticket.py
# but shows an alternative structure for the if/else
#
# By CSCI 111

print("This program determines whether you were speeding and your fine,")
print("if appropriate.")

# getting the necessary input from the user
speed = eval(input("Enter your speed: "))
speedlimit = eval(input("Enter the speed limit: "))

# what happens in this solution?  Why is it not correct behavior?
if speed > speedlimit:
    fine = 50 + 5*(speed-speedlimit)
    print("Your fine will be $", fine)
if speed > 90: 
    fine += 200
    print("Your fine will be $", fine)
if speed <= speedlimit:
    print("You are not speeding.")
    print("Continue safe driving practices.")

# Examples of advanced conditionals
# by Sara Sprenkle

x = 2
y = 3
z = 4

b = x==2
c = not b

# Note: because of precedence, we don't _need_ parentheses
# I added parentheses for readability/emphasis
d = (y<4) and (z<3)
print("d =", d)

d = (y<4) or (z<3)
print("d =", d)

d = not d
print(b, c, d)

# Compute the letter grade, based on the numeric grade
# CSCI 111

numericGrade = float(input("Enter the numeric grade: "))

if grade >= 90:
    letter_grade = "A"
elif grade >=80:
    letter_grade = "B"
elif grade >= 70:
    letter_grade = "C"
elif grade >= 60:
    letter_grade = "D"
else:
    letter_grade = "F"

print("Your letter grade is", letter_grade)

# Assign a letter grade and then fill into the print statement.
# This approach reduces the duplication of print statements.
# If we need to change a print statement, we'd have a lot of places to change.

# Compute the letter grade, based on the numeric grade.
# Written using a function.
# By CSCI 111

def main():
    numericGrade = float(input("Enter the numeric grade: "))
    letter_grade = determineLetterGrade(numericGrade)
    print("Your letter grade is", letter_grade)

def determineLetterGrade( numGrade ):
    """
    Given a numeric grade (between 0 and 100, inclusive), 
    return the letter grade
    """
    # Alternatively, you could have a bunch of return statements, 
    # replacing each time you assign the letter grade,
    # but then the nesting with the elses is not required, 
    # and I wanted you to see that nesting.  
    # So, that is why we did not solve this (initially) using a function.

    if grade >= 90:
        letter_grade = "A" 
    else:
        if grade >=80:
            letter_grade = "B"
        else:
            if grade >= 70:
                letter_grade = "C"
            else:
                if grade >= 60:
                    letter_grade = "D"
                else:
                    letter_grade = "F"
    return letter_grade           

# Compute the letter grade, based on the numeric grade
# CSCI 111

numericGrade = float(input("Enter the numeric grade: "))

if grade >= 90:
    letter_grade = "A"
else:
    if grade >=80:
        letter_grade = "B"
    else:
        if grade >= 70:
            letter_grade = "C"
        else:
            if grade >= 60:
                letter_grade = "D"
            else:
                letter_grade = "F"

print("Your letter grade is", letter_grade)

# Assign a letter grade and then fill into the print statement.
# This approach reduces the duplication of print statements.
# If we need to change a print statement, we'd have a lot of places to change.

# Any speed clocked over the limit results in a fine of at least $50, plus $5
# for each mph over the limit, plus a penalty of $200 for any speed over 90mph.
#
# Input: speed limit and the clocked speed
# Output: either (a) that the clocked speed was under the limit or 
# (b) the appropriate fine
# CSCI 111

import test

EXCESSIVE_SPEED=90

def main():
    print("This program determines whether you were speeding and your fine,")
    print("if appropriate.")
    
    # getting the necessary input from the user
    speed = eval(input("Enter your speed: "))
    speedlimit = eval(input("Enter the speed limit: "))
    
    # calculate fine
    totalFine = calculateFine( speedlimit, speed )
    
    # display the fine or lack thereof
    if totalFine > 0:
        print("The fine is $", totalFine)
    else:
        print("Continue safe driving practices!")

def calculateFine(speedlimit, clockedspeed):
    """
    Precondition: speedlimit and clockedspeed are both non-negative integers
    Calculates and returns a fine if clockedspeed is greater than the speedlimit, or 0 if not speeding.
    """
    if speedlimit < clockedspeed: 
        # speeding
        diff = clockedspeed - speedlimit
        fine = 50 + (diff * 5)
        if clockedspeed > EXCESSIVE_SPEED:
            fine = fine + 200
        return fine
    else: # not speeding
        fine = 0
        return fine
    
def testCalculateFine():
    """
    The test cases we discussed in class
    """
    # excessive speeding
    test.testEqual( calculateFine(50, 100), 500)
    # not-quite excessive speeding
    test.testEqual( calculateFine(65, 90), 175)
    # "typical" speeding
    test.testEqual( calculateFine(45, 50), 75)
    # not speeding
    test.testEqual( calculateFine(70, 65), 0)
    # not speeding, same as speed limit
    test.testEqual( calculateFine(70, 70), 0)
    # not speeding over 90
    test.testEqual( calculateFine(95, 95), 0)
    
    
#testCalculateFine()
main()