Answer:
Enter the price: 100 Item cost: 100 Tax: 5.0 Total: 105.0
Three-way Decisions
You might wonder about the restriction that
an if statement makes only a two-way decision.
Surely you must sometimes pick from more than just two branches?
We ran into this problem with a previous example program that divided integers into negative and non-negative. It really should pick one of three choices:
- Negative:
... -3 -2 -1 - Zero:
0 - Positive:
+1 +2 +3 ...
Two-way decisions can do this. First divide the integers into two groups (using a two-way decision):
- Negative:
... -3 -2 -1 - Zero and Positive:
0 +1 +2 +3 ...
Then further further divide the second group (by using another two-way decision):
- Negative:
... -3 -2 -1 - Zero and Positive:
- Zero:
0 - Positive:
+1 +2 +3 ...
- Zero:
By repeatedly splitting groups into subgroups, you can split a collection into any number of fine divisions.
QUESTION 16:
How could you divide a group of people into:
- children
- male adults
- female adults