Question

The following code segment is intended to round val to the nearest integer and print the result. Double val.

a. int result = Math.ceil(val); System.out.println(result);
b. int result = Math.floor(val); System.out.println(result);
c. int result = (int) Math.round(val); System.out.println(result);
d. int result = Math.trunc(val); System.out.println(result);

Answer 1

The correct code for rounding a number to the nearest integer and printing it is option c: 'int result = (int) Math.round(val); System.out.println(result);'. The other options either don't round in the usual sense or represent methods that don't exist in Java.

Step-by-step explanation:

The code segment provided shows different approaches to rounding a floating-point number to the nearest integer in Java. The correct way to round a decimal value to the nearest integer and then print it is:

c. int result = (int) Math.round(val); System.out.println(result);

Here's a breakdown of what each method does:

• Math.ceil(val) - Rounds the value up to the nearest whole number.
• Math.floor(val) - Rounds the value down to the nearest whole number.
• Math.round(val) - Rounds the value to the nearest whole number, considering if it's above or below the .5 threshold.

However, there is an error in options a and b, as Math.ceil() and Math.floor() return a double, so the casting to int is required. Moreover, there is no Math.trunc() method in Java; to truncate, you would typically cast directly to int without a method, or use Math.floor() if dealing with positive numbers.