View difference between Paste ID: JG8mL90A and tapXRTVq

 package javaapplication3;
 import java.util.Scanner;
 public class JavaApplication3 {
     public static void main(String[] args) {
         Scanner input = new Scanner(System.in);
         double a, b, c, d;
         p("\nDigite o elemento A: ");
-        a = input.nextInt();
+        l(a);
         p("\nDigite o elemento B: ");
-        b = input.nextInt();
+        l(b);
         p("\nDigite o elemento C: ");
-        c = input.nextInt();
+        l(c);
         p("\n====================\n");
         p(a + "x² + " + b + "x + " + c + " = 0\n");
         p("(-b ± Raiz(b² - 4 . a . c) ) / 2 . a\n");
         p("(-b ± Raiz(" + b + "² - 4 . " + a + " . " + c + ") ) / 2 . a\n");
         p("(-b ± Raiz(" + Math.pow(b,2) + " - " + 4 * a * c + ") ) / 2 . a\n");
         d = Math.pow(b,2) - 4 * a * c;
         if(d < 0){
             p("Raiz do delta não pertence aos Reais. (Raiz(" + d + ") != Reais)");
         }
         else
         {
             p("(-b ± Raiz(" + d + ") ) / 2 . a\n");
             p("(-b ± Raiz(" + d + ") ) / " + 2 * a + "\n");
             p("(" + i(b) + " ± Raiz(" + d + ") ) / " + 2 * a + "\n");
             p("    -------------------\n");
             p("    x1 = (" + i(b) + " + " + r(d) + ") ) / " + 2 * a + "\n");
             p("    x1 = (" + (i(b) + r(d)) + ") ) / " + 2 * a + "\n");
             p("    x1 = " + (i(b) + r(d)) / 2 * a + "\n");
             p("    -------------------\n");
             p("    x2 = (" + (i(b)) + " - " + r(d) + ") ) / " + 2 * a + "\n");
             p("    x2 = (" + (i(b) - r(d)) + ") ) / " + 2 * a + "\n");
             p("    x2 = " + (i(b) - r(d)) / 2 * a + "\n");
             p("    -------------------\n");
             p("Done!!");
         }
     }
     public static void p(String stri){
         System.out.print(stri);
     }
     public static double r(double n){
         return Math.sqrt(n);
     }
     public static double i(double n){
         return (n * -1);
     }
     public static void l(double n){
         n = input.nextInt();
     }
 }