examples.py

'''
Write a Python program that checks the temperature and provides a message based on the 
temperature value. 

If the temperature is above 27 degrees Celsius, it should print "It's a hot day." 
If the temperature is 27 degrees or below, it should print "It's not a hot day."
'''
'''
temperature = int(input("Enter the temperature: "))

if temperature > 27:
    print("it's a hot day!")
else:
    print("it's not a hot day")
'''
'''
Write a Python program that calculates and displays a letter grade for a given numerical score based on the following grading scale:

    A: 90-100
    B: 80-89
    C: 70-79
    D: 60-69
    F: 0-59
'''
'''
score = int(input("Enter the score: "))

if score >= 90 and score <= 100:
    print("Your grade is A")
elif score >= 80 and score < 90:
    print("Your grade is B")
elif score >= 70 and score < 80:
    print("Your grade is C")
elif score >= 60 and score < 70:
    print("Your grade is D")
else:
    print("Your grade is F")
'''
'''

Write a Python program that classifies a person's age into one of the following categories: 
"Infant," "Child," "Teenager," "Adult," or "Senior." 
The program should ask the user for their age and then display the corresponding classification based on the following guidelines:

    Infants: 0-2 years old
    Children: 3-12 years old
    Teenagers: 13-19 years old
    Adults: 20-64 years old
    Seniors: 65 years old and older
'''

'''age = int(input("Please enter your age: "))

if age >= 0 and age <= 2:
    print("Infant")
elif age >= 3 and age <= 12:
    print("Children")
elif age >= 13 and age <= 19:
    print("Teenagers")
elif age >= 20 and age <= 64:
    print("Adults")
else:
    print("Seniors")'''

'''
A leap year is a calendar year containing an additional day added to keep the calendar year synchronized with the astronomical or 
seasonal year. 
In the Gregorian calendar, each leap year has 366 days instead of 365, by extending February to 29 days rather than the common 28. 
These extra days occur in years which are multiples of four (with the exception of centennial years not divisible by 400). 
Write a Python program, which asks for a year and calculates, if this year is a leap year or not.
'''
'''year = int(input("Enter the year to see if it is leap year or not: "))

if (year % 4 == 0 and year % 100 != 0)or (year % 400 != 0):
    print(f"{year} is a leap year!")
else:
    print(f"{year} is not a leap year!")'''

'''
Body mass index (BMI) is a value derived from the mass (weight) and height of a person. 
The BMI is defined as the body mass divided by the square of the body height, and is universally expressed in units of kg/m2, 
resulting from mass in kilograms and height in metres. 
Write a program, which asks for the length and the weight of a person and returns an evaluation string. 
'''

'''height = float(input("Enter the height of the person:  "))
weight = float(input("Enter the weight of the person: "))

bmi = weight/height ** 2
print(bmi)

if bmi < 15:
    print("Very severly underweight")
elif bmi < 16:
    print("Severely underweight")
elif bmi < 18.5:
    print("Underweight")
elif bmi < 25:
    print("Normal (healthy weight)")
elif bmi < 30:
    print("Overweight")
elif bmi < 35:
    print("Obese Class I (Moderately obese)")
elif bmi < 40:
    print("Obese Class II (Severely obese)")
else:
    print("Obese Class III (Very severely obese)")'''

'''
Write a Python program that calculates and displays a student's final grade based on their scores for various components of a course. 
The program should take into account scores for homework assignments, quizzes, and a final exam. 
It should also consider the course grading policy:

Homework assignments: 20% of the final grade.
Quizzes: 30% of the final grade.
Final exam: 50% of the final grade.
'''
homework_score = float(input("Enter your homework score(out of 100): "))
quiz_score = float(input("Enter your quiz score(out of 100): "))
exam_score = float(input("Enter your final exam score(out of 100): "))

homework_weight = 0.20
quiz_weight = 0.30
exam_weight = 0.50

final_grade = (homework_score * homework_weight
               + quiz_score * quiz_weight
               + exam_score * exam_weight)

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

print("Your final grade is: ", final_grade)
print("Your letter grade is: ", letter_grade)