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public class Main
{
public static void main(String[] args) {
System.out.println("56 is pronic number " + isPronicNumber(56));
System.out.println("57 is pronic number " + isPronicNumber(57));
}
static boolean isPronicNumber(int numberToCheck)
{
int sqrt = (int)(Math.sqrt(numberToCheck));
return sqrt * (sqrt + 1) == numberToCheck ? true : false;
}
}