Program to compute Permutation and Combination in Java

class P4
{
public static void main(String args[])
{
int i , n , r , P , C ;
int factorial , temp , result ;


n = 6; r=3;


              for (i=1,factorial=1 ; i<=n ; i++)    /* Calculate n! */
factorial = factorial * i ;


              for (i=1,temp=1 ; i<=r ; i++)         /* Calculate r! */
temp = temp * i ;


for (i=1,result=1 ; i<=(n-r) ; i++) /* Calculate (n-r)!*/
result = result * i ;


P = factorial / temp ;
C = P / result ;


System.out.println(" Permutation  : "+P);
System.out.println(" Combination  :  "+C);
}
}