Java PRNG from scratch

Question

I have to create a PRNG with these parameters "The program should generate a sequence of 1000 numbers using the following algorithm: seed = ( 1664525 * seed + 1013904223 ) % 4294967296 For each new seed, print out the decimal value of seed / 4294967296. Remember, you have to convert the long's to doubles before doing this division to get a decimal number!" and you can laugh if you want but this is what i`ve thrown together so far,

  import java.util.Scanner;  
  public class Random 
  {     
     public static void main( String args[] ) 
     {      
         Scanner input = new Scanner( System.in );
     long seed ;            
         double seeded ;            

         do             
         {  
             System.out.printf("Enter a Number between -2147483648 and 2147483647") ;        long num = input.nextLong() ;                  
             seed = num ;               

             while ( seed >= -2147483648 && seed <= 2147483647) ;   
     {                  
                    for ( long seed = 0 ; seed < 1000 ; seed ++ ) ; 
            {                   
                          seed = (1664525 * seed + 1013904223) % 4294967296) ;
              seeded = seed ;
                    }
                        System.out.printf(" %f", seeded ) ; 
                                }           }   }     } 

this is my first year in the program doing java. I am NOT asking for anyone to do my work, that won`t help me but a nudge would. Thanx

Answer 1

The first problem I can see is the semicolons immediately after the while and the for. Those are almost certainly not what you want to have there.