Section 2.9 String operations
The + operator works with strings, but it is not addition in the mathematical sense. Instead it performs concatenation, which means joining the strings by linking them end to end. For example:
Checkpoint 2.9.1.
csp-10-2-2: Which of the following correctly prints “Apples, Oranges, Blueberries, Strawberries, Raspberries, Peaches, Plums” from the codeblock below?
fruit = "Apples, Oranges"
berries = "Blueberries, Strawberries, Raspberries"
stoneFruit = "Peaches, Plums"
print(berries + ", " + fruit + ", " + stoneFruit)
Are they in the correct order?
print(fruits + " " + berries + " " + stonefruit)
Make sure you are using the right variable names.
print(fruit + ", " + berries + ", " + stoneFruit)
This will print Apples, Oranges, Blueberries, Strawberries, Raspberries, Peaches, Plums
print(fruit + berries + stoneFruit)
Don't forget the commas and spaces!
The * operator also works with strings by multiplying the content of a string by an integer. For example:
Checkpoint 2.9.2.
cheer = "Let's go Blue"
excl = "!"
print(cheer + excl * 2)
Let's go Blue !!
Is there an extra space in the cheer variable?
Let's go Blue!!
This will print Let's go Blue!! Only excl is multiplied by 2.
Let's go Blue! Let's go Blue!
Think about the order of operations.
Lets go Blue ! Let's go Blue !
Think about the order of operations, and remember that the apostrophe ' is in the string.
Checkpoint 2.9.3.
csp-10-2-5: Which of the following is not true about string operations?
You can combine strings using + (concatenation).
You can combine strings using "+". Which of the options is not true?
Concatenating strings automatically adds a space between the strings.
Concatenating joins the strings beginning to end without adding additional spaces.
You can use * to multiply a string by an integer.
You can use "*" to multiply a string by an integer.
The operands + and * follow the order of operations when applied to strings.
The operands "+" and "*" follow the order of operations when applied to strings.
