Computer Lab 02: variables, conditionals

We will practice exercises from Wentworth2012.

• 2.14.5
• 2.14.7
• 2.14.8

input function helps in reading user input. Certain values are naturally positive (greater than zero). Your program should check this and return something like Error: waiting hours must be greater than zero in case the user inserts a negative number.

• Create a script that reads a number of hours from standard input (and checks whether a number was given), and prints to standard output the corresponding number of days and hours. E.g., when the script gets 51 as the number of hours, it shall print something like 51 hours is 2 days and 3 hours. If you have issues with creating such a string, just print 2 and 3. To check if user entered integer number you can use suitable string method. Check Python documentation to learn more about strings (Text Sequence Type — str).

• Read chapters 4 and 5 from the book Wentworth2012. We will not use Turtles, though.