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Readability settings Prev Up Next Scratch ActiveCode Profile title here \(
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Section 7.13 strings are comparable
All the comparison operators that work on
ints and
doubles also work on
strings.
Listing 7.13.1. This active code checks to see if word is equal to "banana".The other comparison operations are useful for putting words in alphabetical order.
Listing 7.13.2. This active code uses comparison operators to determine the ordering of word relative to "banana".You should be aware, though, that the
string class does not handle upper and lower case letters the same way that people do. All the upper case letters come before all the lower case letters. As a result,
Your word, Zebra, comes before banana.
A common way to address this problem is to convert strings to a standard format, like all lower-case, before performing the comparison. The next sections explains how. I will not address the more difficult problem, which is making the program realize that zebras are not fruit.
For the following questions, remember that in C++
1 means true and
0 means false.
Checkpoint 7.13.1 .
What would the result of the following comparison be? Where
1 means true and
0 means false.
Checkpoint 7.13.2 .
What would the result of the following comparison be? Where
1 means true and
0 means false.
1
d is greater than D
0
Yes, upper case is less than lower case according to the ordinal values of the characters.
They are the same word
C++ is case sensitive meaning that upper case and lower case characters are different.
Checkpoint 7.13.3 .
What would the result of the following comparison be? Where
1 means true and
0 means false.
Checkpoint 7.13.4 .
What would the result of the following comparison be? Where
1 means true and
0 means false.
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