In both postfix and prefix mode, these operators add one to or subtract one from

Question

In both postfix and prefix mode, these operators add one to or subtract one from their
operand. Code Listing 4-2 demonstrates this.
Code Listing 4 -2 (Prefix. java)


1 1**
2 This program demonstrates the ++ and -- operators
3 in prefix mode.
4 *1
5
6 public class Prefix
7 {
8 public static void main(String[] args)
9 {
10
11
12
13
14
15
16
17
18
19
20
21
22
int number = 4; II number starts out with 4
II Display the value in number.
System.out.println("number is " + number);
System.out.println("I will increment number.");
II Increment number.
++number;
II Display the value in number again.
System. out. pri ntln( "Now, number is " + number);
System.out.pri ntln( "I will decrement number.");
23 II Decrement number.
24 --number;
25
26 II Display the value in number once again.
27 System.out.println( "Now, number is " + number);
28 }
29


Program Output
number is 4
I will increment number.
NOw, number is 5
I will decrement number .
Now, number is 4

Explanation / Answer

public class Prefix { public static void main(String[] args) { int number = 4; // number starts out with 4 // Display the value in number. System.out.println("number is " + number); System.out.println("I will increment number."); // Increment number. ++number; // Display the value in number again. System.out.println( "Now, number is " + number); System.out.println( "I will decrement number."); --number; // Decrement number. // Display the value in number once again. System.out.println( "Now, number is " + number); } }

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