Page 180 - Introduction to Programming with Java: A Problem Solving Approach

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Chapter 4 Control Statements
4.
[after §4.10] Given this main method:
1
public static void main(String[] args)
2{
3
int i;
String debug;
for (int i=0; i<3; i++)
4
5
6{
7
switch (i
* i)
= "first";
case 2:
= "second";
= "third";
8{
9
10
case 0:
debug
break;
case 1:
debug
case 3:
debug
default:
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System.out.println("In default");
// end switch
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}
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} // end for
System.out.println("i = " + i);
} // end main
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Trace the code using either the short form or the long form. To help you get started, here’s the trace setup. For the short form, you won’t need the line# column.
line#
i
debug
output
5.
Apago PDF Enhancer
[after§4.10]Giventhebelowprogramskeleton.Insertcodeinthe<insert-code-here>sectionsuchthatthe program prints the product of even integers from 2 to num. You are not required to perform input validation.
public class ProductEvenInts
{
}
// end class ProductEvenInts
public static void main(String[] args)
{
}
Scanner stdIn = new Scanner(System.in);
int i, num, product;
System.out.print("Enter a positive even number: ");
num = stdIn.nextInt();
<insert-code-here>
System.out.println("Product = " + product);
// end main
Sample session:
Enter a positive even number: 8
Product = 384