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J05_18.java

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package chapter05;

import java.io.*;

import java.util.Scanner;

public class J05_18 {

public static void main(String args[]) throws IOException {

Scanner scnr = new Scanner(System.in);

int N=0;

long fact = 1;

Loop1:

for( ; ; ) {

System.out.print("Enter a positive integer: ");

N = scnr.nextInt();

Loop2:

if(N<0)

{

System.out.println("Negative Number not allowed! Enter Again");

continue Loop1;

}

else if (N==0)

{

System.out.print("Factorial of " +N +" is : " + fact);

break Loop1;

}

else

{

for (int i=2; i<=N; i++)

fact = fact * i;

System.out.println("Factorial of " +N +" is : " + fact);

break Loop2;

}

} // End of for (Loop1)

scnr.close();

}

}