Instructions

Guess the result, then click on the run button.

Note:

The error message indicates that the computer kept looking for a matching double quotation mark until it hit the end of the line and then complained.

Hints:

  • undefined

Modify the program so that it prints the string "What's that?". Your program should not use an escape character.

The outer quotation marks are used to show where the string begins and ends. They will not show up when the string is printed.

Note:

Hints:

  • Look carefully at the use of different types of quotation marks.

Modify the program again so that it still prints the string "What's that?", but this time it uses an escape character.

The outer quotation marks are used to show where the string begins and ends. They will not show up when the string is printed.

Note:

Hints:

  • Escape characters use the backslash.

Write a program that uses an escape character to print the string "first" on the first line and the string "second" on the second line.

Note:

Hints:

  • Make sure that there are no extra blank spaces.

Write a program that forms and prints a new string by exchanging the first and last characters in the string "mystery". Use an index to extract a single character and use the slice operation to obtain a substring.

Note:

Hints:

  • Remember that the first position in the string is 0.

Rewrite the program using negative numbers in the slice.

The program should form and print a new string by exchanging the first and last characters in the string "mystery".

Note:

Hints:

  • Remember that the index of the last character in the string is -1.

Write a program that asks the user for a string and then prints the string in upper case.

Note:

Hints:

  • Remember to use the function input to ask the user for input.

Now modify your program to print only the first three characters of the string, in upper case.

Note:

Hints:

  • Use the slice function to extract a substring.

Write a program that determines the volume of a can with a diameter of 8 centimetres and a height of 27 centimetres.

The volume is the height multiplied by the area of the circle at one end.

Note:

Hints:

  • Did you remember to compute the area using the radius, not the diameter?

How many cans are needed to store 8 litres of strawberry jam?

Give the answer as an integer, using your solution to the previous question. One can may not be full.

There are 1000 cubic centimetres in a litre.

Note:

Hints:

  • You may wish to use the function math.ceil.
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