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トップJavaに関する質問JAVAに関する質問

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1

ソースの変更

2018/05/20 06:24

投稿

退会済みユーザー
test CHANGED
@@ -3,6 +3,10 @@
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  ```Java
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+
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+ import java.util.*;
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+
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+
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  public class Main {
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@@ -14,57 +18,23 @@
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  System.out.println("加法 -> 1 減法 -> 2 を入力");
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- int n;
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+ int n = Integer.parseInt(sc.nextLine());
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- do{
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+
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- n = Integer.parseInt(sc.nextLine());
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+ int num1, num2;
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- if(n < 1 || 2 < n){
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+ System.out.println("2つの数字を入力");
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- System.out.println("再入力してください。");
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+ num1 = Integer.parseInt(sc.nextLine());
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- }
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-
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- }while(n < 1 || 2 < n);
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+ num2 = Integer.parseInt(sc.nextLine());
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- int num1, num2;
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+ Calculation calc = new Calculation(num1,num2);
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- System.out.println("2つの数字を入力");
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-
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- num1 = Integer.parseInt(sc.nextLine());
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-
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- num2 = Integer.parseInt(sc.nextLine());
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-
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-
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-
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- Calculation calc = new Calculation();
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-
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- Calculation value = calc.calcMethod(num1, num2);
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-
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-
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-
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- switch(n){
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-
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- case 1:
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-
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- System.out.println(value.add);
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+ calc.print_answer(n);
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-
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- break;
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-
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- case 2:
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-
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- System.out.println(value.subtraction);
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-
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- break;
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-
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- default:
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-
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- break;
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-
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- }
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  System.out.println();
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@@ -76,21 +46,33 @@
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  class Calculation{
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- int add;
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+ private int MyNum1;
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- int subtraction;
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+ private int MyNum2;
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+
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+
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+
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+ public Calculation(int num1,int num2){
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+
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+ MyNum1 = num1;
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+
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+ MyNum2 = num2;
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+
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+ }
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- public Calculation calcMethod(int num1,int num2){
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+ public void print_answer(int n){
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- Calculation calc = new Calculation();
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+ n = n % 2;
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- calc.add = num1 + num2;
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+ if(n == 0){
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- calc.subtraction = num1 - num2;
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+ MyNum2 *= -1;
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+ }
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+
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- return calc;
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+ System.out.println(MyNum1 + MyNum2);
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  }
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