Finding the average of two double digits.

Hello,
I have to do an assignment for school. I have to write a code for a program that calculates the average of to double numbers. I wrote this is NetBeans and it gives me the following errors:

the variables first and second may have not been initialized
cannot find symbol sc

Code :

---

   public class DecimalAveShifat {
      public static void main(String args []){
         double first;
         double second;
         double mean1;
         double meanf;
         mean1 = first + second;
         meanf = mean1 / 2;
         System.out.println ("First Decimal Number: ");
         first = sc.nextDouble ();
         System.out.println ("Second Decimal Number: ");
         second = sc.nextDouble ();
         System.out.println ("The avarage of the two is  " + meanf) ;
      }
   }

---

I am just a beginner. It has only been a week since I started computer science class at school.
If anyone could tell me what is wrong, and the fix for it, it would be wonderful.
Thanks in advance.

Shifat Taushif
shifat.tk

Quote:

---

the variables first and second may have not been initialized

---

The compiler is telling you that you are trying to use first and second before you have given them any value.

Basically you cannot say

Code :

---

mean1 = first + second;

---

until after you have got the user input and assigned it to first and then second. So move that line down a bit.

Quote:

---

cannot find symbol sc

---

You get this message if you haven't declared a variable. In this case you forgot to say what sc is and assign it a value. (You will also see this message when you make a typo and type the wrong thing for a variable).

thanks!
+rep

You're welcome.