class Goukei { public static void main(String[ ] args) { System.out.println("数値を3つ入力してください。\n"); Scanner sc = new Scanner(System.in); int a = sc.nextInt(); int b = sc.nextInt(); int c = sc.nextInt(); int sum = a + b + c; System.out.println("3つの数値の合計は" + sum + "です"); } }