Computer Applications
Write a program to accept a number and check whether the number is a perfect square or not.
Sample Input: 49
Sample Output: A perfect square
Java
Input in Java
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Answer
import java.io.*;
public class KboatPerfectSquare
{
public static void main(String args[]) throws IOException {
InputStreamReader read = new InputStreamReader(System.in);
BufferedReader in = new BufferedReader(read);
System.out.print("Enter the number: ");
int a = Integer.parseInt(in.readLine());
double srt = Math.sqrt(a);
double diff = srt - Math.floor(srt);
if (diff == 0) {
System.out.println(a + " is a perfect square");
}
else {
System.out.println(a + " is not a perfect square");
}
}
}Output
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