Conditional Constructs in Java

Chapter 8

Conditional Constructs in Java

Class 10 - Logix Kips ICSE Computer Applications with BlueJ

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Java Program: To Read Value of X and Compute Value of Function

25. Write a program that will read the value of x and compute the following function:

import java.util.Scanner;
 
public class ComputeFunction {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
 
        int x, y;
 
        System.out.print("Enter the value of x: ");
        x = sc.nextInt();
 
        if (x > 0) {
            y = 7;
        } else if (x == 0) {
            y = 0;
        } else {
            y = -7;
        }
 
        System.out.println("Value of y = " + y);
    }
}

Sample Run 1 
Enter the value of x: 5
Value of y = 7

Sample Run 2 
Enter the value of x: 0
Value of y = 0

Sample Run 3 
Enter the value of x: -4
Value of y = -7

✅ Explanation

• The program reads an integer value of x using the Scanner class.
• It checks:
• If x > 0, assigns y = 7
• If x == 0, assigns y = 0
• If x < 0, assigns y = -7
• Finally, it displays the computed value of y.