# Kotlin Program to Display Prime Numbers Between Intervals Using Function

In this program, you'll learn to display all prime numbers between the given intervals using a function in Kotlin.

To find all prime numbers between two integers, `checkPrimeNumber()` function is created. This function checks whether a number is prime or not.

## Example: Prime Numbers Between Two Integers

``````fun main(args: Array<String>) {
var low = 20
val high = 50

while (low < high) {
print(low.toString() + " ")

++low
}
}

var flag = true

for (i in 2..num / 2) {

if (num % i == 0) {
flag = false
break
}
}

return flag
}``````

When you run the program, the output will be:

`23 29 31 37 41 43 47 `

In the above program, we've created a function named `checkPrimeNumber()` which takes a parameter num and returns a boolean value.

If the number is prime, it returns `true`. If not, it returns `false`.

Based on the return value, number is printed on the screen inside `main()` function.

Here's the equivalent Java code: Java Program to Check Prime Number using Function