# Java: Check a number is a cube or not

## Java Numbers: Exercise-18 with Solution

Write a Java program to check if a number is a cube or not.

In arithmetic and algebra, the cube of a number n is its third power: the result of the number multiplied by itself twice:

n^{3} = n × n × n

Input Data:

Input a number: 8

**Pictorial Presentation:**

**Sample Solution:**

**Java Code:**

```
import java.util.Scanner;
public class Example18 {
public static void main( String args[] ){
Scanner sc = new Scanner( System.in );
System.out.print("Input a number: ");
int num = sc.nextInt();
int n = (int) Math.round(Math.pow(num, 1.0/3.0));
if((num == n * n * n))
{
System.out.print("Number is a cube.");
}
else
{
System.out.print("Number is not a cube.");
}
System.out.println("\n");
}
}
```

Sample Output:

Input a number: 8 Number is a cube.

**Flowchart: **

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