Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

PROGRAMMING PRACTICE-PROBLEM QUESTIONS AND
DETAILED SOLUTIONS – VOLUME 3
CONVERSION, MEASUREMENT, AND UNIT EXERCISES

1

Contents
1

Problem to Convert Other Time Units to Seconds
...
1

Program
...
2

Output
...
4

2
...
4

2
...
4

3

Problem to Display Current Time
...
1

Program
...
2

Output
...
5

4
...
5

4
...
6

5

Problem to Add All the Digits in an Integer Number
...
1

Program
...
2

Output
...
Your program should be able to add them together to give a duration
summation in seconds
...
1 Program
weeks = int(input("Please enter the number of weeks:\n"))
days = int(input("Now, enter the number of days:\n"))
hours = int(input("Enter the number of hours:\n"))
minutes = int(input("Enter the number of minutes:\n"))
seconds = int(input("Please enter the number of seconds:\n"))

minutes_to_seconds = minutes * 60
#Recall that there are 60 seconds in a minute
hours_to_seconds = hours * 60 * 60
#Recall that there are 60 minutes in an hour
days_to_seconds = days * 24 * 60 * 60
#Recall that there are 24 hours in a day
weeks_to_seconds = weeks * 7 * 24 * 60 * 60
#Recall that there are 7 days in a week
total_seconds = weeks_to_seconds
minutes_to_seconds + seconds

+

days_to_seconds

+

hours_to_seconds

print("The total number of seconds is " + str(total_seconds) " seconds
...
2 Output
Please enter the number of weeks:
3
Now, enter the number of days:
6
Enter the number of hours:
10
Enter the number of minutes:
55
Please enter the number of seconds:
31
The total number of seconds is 2372131 seconds
...
This problem is a reversal of the
procedure in the preceding problem
...


2
...
2 Output
Enter the number of seconds to convert:
2372131
There are 3 weeks, 6 days, 10 hours, 55 minutes, and 31 seconds in 2372131

4

3

Problem to Display Current Time
Write a computer program that will output the current date and time
...
There are in-built functions that can detect and read the computer
system’s clock to produce output in forms that are human understandable
...
1 Program
from datetime import datetime
#from is a keyword used with a module where the class is imported
#import lets the class datetime to be used later
current_date_and_time = datetime
...
strftime("%d/%m/%Y %H:%M:%S")
#strftime is used to format the date in specific and more human friendly and readable ways
print("This is a formatted current date and time: " + str(formatted))
month_formatted = current_date_and_time
...
2 Output
The current date and time is 2023-03-17 16:43:50
...
That is, it should be able to read inputs from
degrees Celsius to degrees Fahrenheit, likewise from degrees Fahrenheit to degrees Celsius
...
1 Program
#1
...
From degrees Fahrenheit to degrees Celsius
fahrenheit = float(input("Please enter the temperature value in degrees Fahrenheit:\n"))
celsius = (fahrenheit - 32) * (5/9)
print("The temperature in degrees Celsius is " + str(celsius))

4
...
0
Please enter the temperature value in degrees Fahrenheit:
95
The temperature in degrees Celsius is 35
...
For instance, an integer 42843 should have an expected output
of 4+2+8+4+3 = 21
...
1 Program
number = list(input("What is the 5-digit integer?\n"))
#Note that the input was not read in the usual familiar ways with integer data type as in the
previous examples
...
List is a versatile data type that can store varieties of
many data types
...

#[] allows each item in the list to be indexed starting from 0
print("The sum of the digits is " + str(sum_of_digits))

5

---