Question

This is a factorial program in java, its not working please let me know the errors. Thanks!

class Fact {
   public static void main(String[] args) {

      int i=5,num=1;

      while(i>1) {
         num=num*i;
      }
      i--;

      System.out.println("Value: " + num);      
   }
}

Answer 1

You decrease the variable i outside of the while loop when it’s supposed to be inside of it.

  while(i>1)
  {
     num=num*i;
  }
  i--;

Should be:

  while(i>1)
  {
     num=num*i;
     i--;
  }

What your current code says is that while *i* is greater than 1 do your multiplication. The problem is that i will always be greater then 1 since you never substract from it.