Using Variables - Java Eclipse. : When I run the program, the first step is to add a number and another etc. whenever i input m or l (the variables i created) an error pops up, however is works fine when i just use numbers. How do i make my variables usable to input. (Apologies if im not making sense, its hard to explain)
package pizza;

import java.util.Scanner;

public class size {
	

	public static void main(String args[]) {
		
		double m, l;	
		m = 4;
		l = 5;
				
		Scanner pizzasize = new Scanner(System.in);
		double fstep, sstep, tstep, ostep, lstep, tot;	
		m = 4;
		l = 5;
		System.out.println("Enter pizza size:");
		fstep = pizzasize.nextDouble();
		System.out.println("Enter pizza size:");
		sstep = pizzasize.nextDouble();
		System.out.println("Enter pizza size:");
		tstep = pizzasize.nextDouble();
		System.out.println("Enter pizza size:");
		ostep = pizzasize.nextDouble();
		System.out.println("Enter pizza size:");
		lstep = pizzasize.nextDouble();
		tot = fstep+sstep+tstep+ostep+lstep;
        System.out.println(tot);
        
        pizzasize.close();