Write a program to input a number and check and print whether it is a Pronic number or not. (Pronic number is the number which is the product of two consecutive integers)
Examples:
12 = 3 x 4
20 = 4 x 5
42 = 6 x 7
import java.util.Scanner;
public class RAnsariPronicNumber
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.print("Enter the number to check: ");
int num = in.nextInt();
boolean isPronic = false;
for (int i = 1; i <= num - 1; i++) {
if (i * (i + 1) == num) {
isPronic = true;
break;
}
}
if (isPronic)
System.out.println(num + " is a pronic number");
else
System.out.println(num + " is not a pronic number");
}
}Enter the number to check: 12
12 is a pronic number
Enter the number to check: 65
65 is not a pronic number
Enter the number to check: 20
20 is a pronic number
Enter the number to check: 42
42 is a pronic number
First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.