Question

Given below is the program with errors in it. Identify the errors. Rewrite the program and predict the output.

import java.util.*;
class ProGram
{
      void main()
      {
         int n=0, tn = 0, p = 0 ; Scanner sc = new Scanner (System.in);
         System.out.print("\n Enter total terms (n) :");n = sc.nextInt();
         for(tn = n; tn<=1; tn--)
         {
             p =p*tn;
             System.out.print("Factorial of n =" + p );
         }
      }
}

Answer 1

import java.util.*;
class ProGram
{
    void main()
    {
      int n=0, tn = 0, p = 1; Scanner sc=new Scanner(System.in);
      System.out.print("\n Enter total terms (n):");n=sc.nextInt();
      for(tn = n; tn>= 1; tn--)
      {
          p=p*tn;
      }
      System.out.print("Factorial of n ="+p);
    }
}

Factorial of n