factmain.java

针对越来越多的用户喜欢JAVA

import  java.io.*;
public  class  FactMain {   
   public  static  void  main( String  args[] )
   {   
       Fact  N = new  Fact( 5 ); 
       System.out.println( N.fact( ) );
    }
}

class  Fact  {  
     int  n ;  
	 Fact( int  nn ) { n = nn;  }
     int  fact( ) {
		 int  i , f = 1;
		 for ( i=1;  i<=n; i++ )
			 f = f*i;
		 return  f;
	 } 
}