Can a single if-else
statement choose one of three options?
No. An if-else
statement makes a binary decision,
a choice between two options.
To make a three-way choice,
a nested if is used.
This is where an if-else
statement is
part of a the true-branch (or false-branch) of another if-else
statement.
So the nested if will execute only when the outer if has already made a choice
between two branches.
Here is a program fragment that does that to make a choice
of one of the three Strings.
String suffix; . . . . . // count is the number of integers added so far. . . . . . // count+1 will be the next integer to read if ( count+1 ______________ ) suffix = "nd"; else if ( count+1 ______________ ) // false-branch of first if suffix = "rd"; // false-branch of first if else // false-branch of first if suffix = "th"; // false-branch of first if System.out.println( "Enter the " + (count+1) + suffix + " integer (enter 0 to quit):" );
The false-branch of the first if
statement consists
of another entire if
statement.
Fill in the blanks so that: