Kotlin Program to Round a Number to n Decimal Places

Kotlin Server Side ProgrammingProgramming

In this article, we will understand how to round a number to n decimal places. Rounding of decimal values are done using the ceil() or floor() functions.

Below is a demonstration of the same −

Suppose our input is

Input : 3.1415

The desired output would be −

Output : 3.2

Algorithm

  • Step 1 − START

  • Step 2 − Declare a float value namely myInput.

  • Step 3 − Define the values

  • Step 4 − Use format() to alter the number of decimal places required. Store the result.

  • Step 5 − Display the result

  • Step 6 − Stop

Example 1

In this example, we will Round a Number to n Decimal Places. First, let us declare a variable for input

val myInput = 3.1415

Now, we will format and round the input to 3 decimal places using %.3f −

println("%.3f".format(myInput))

Let us now see the complete example to round a number to n decimal places −

fun main() { val myInput = 3.1415 println("The number is defined as $myInput") println("The result after rounding the number to 3 decimal places is: ") println("%.3f".format(myInput)) }

Output

The number is defined as 3.1415
The result after rounding the number to 3 decimal places is: 3.142

Example 2

In this example, we will round a Number to n Decimal Places −

fun main() { val myInput = 3.1415 println("The number is defined as $myInput") roundDecimal(myInput) } fun roundDecimal(myInput: Double) { println("The result after rounding the number to 3 decimal places is: ") println("%.3f".format(myInput)) }

Output

The number is defined as 3.1415
The result after rounding the number to 3 decimal places is: 3.142
raja
Updated on 13-Oct-2022 13:38:07

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