java gunung

import java.util.Scanner;
public class gunung
{
public static void main (String[] args)
{
int a,b = 0,c,d,e,f;

System.out.println("=======================================\n");
System.out.println("PROGRAM MEMBUAT GUNUNG ");
System.out.println("DENGAN MEMASUKKAN INPUT BILANGAN N ");
System.out.println("DISUSUN OLEH ");
System.out.println("ROKHMAT EDI SAPUTRO");
System.out.println("PT INFORMATIKA KELAS F2");
System.out.println("095 202 440 26\n");
System.out.println("========================================\n\n ");

System.out.print("Masukkan Nilai Batasan Untuk n : ");
Scanner nilai = new Scanner (System.in);
a = nilai.nextInt();
System.out.print("\nHasilnya adalah :\n");
e=1;
for(c=(a-1);c>=b;c--)
System.out.print(" ");
System.out.print("*");
System.out.print("\n");
for (b=1;b<=a;b++)
{
for(c=(a-1);c>=b;c--)
System.out.print(" ");
for(c=b;c<=b;c++)
System.out.print("* ");
for (d=1;d<=b;d++)
{e=e*2;
System.out.printf("* ",e);}
for (d=b;d>=1;d--)
{e=e/2;
System.out.printf("* ",e);}
System.out.printf("\n");
}
}
}