Java Reference
In-Depth Information
false
score >= 90
false
true
score >= 80
grade = 'A'
false
true
score >= 70
grade = 'B'
false
true
score >= 60
grade = 'C'
true
grade = 'D'
grade = 'F'
F
IGURE
3.5
You can use a multi-way
if-else
statement to assign a grade.
The
if
statement in Figure 3.4a is equivalent to the
if
statement in Figure 3.4b. In fact,
Figure 3.4b is the preferred coding style for multiple alternative
if
statements. This style, called
multi-way
if
-
else
statements
, avoids deep indentation and makes the program easy to read.
multi-way
if
statement
3.8
✓
✓
Suppose
x = 3
and
y = 2
; show the output, if any, of the following code. What is
the output if
x = 3
and
y = 4
? What is the output if
x = 2
and
y = 2
? Draw a flow-
chart of the code.
if
(x >
2
) {
if
(y >
2
) {
z = x + y;
System.out.println(
"z is "
+ z);
Check
Point
}
}
else
System.out.println(
"x is "
+ x);
3.9
Suppose
x = 2
and
y = 3
. Show the output, if any, of the following code. What is
the output if
x = 3
and
y = 2
? What is the output if
x = 3
and
y = 3
? (
Hint
: Indent
the statement correctly first.)
if
(x >
2
)
if
(y >
2
) {
int
z = x + y;
System.out.println(
"z is "
+ z);
}
else
System.out.println(
"x is "
+ x);
