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Kotlin Program to Round a Number to n Decimal Places
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