質問編集履歴
4
コード追加
title
CHANGED
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File without changes
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body
CHANGED
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@@ -43,4 +43,43 @@
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43
43
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}
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44
44
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}
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45
45
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}
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46
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+
```
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47
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+
```Java
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48
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+
package en12;
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49
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+
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50
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+
public class Circle {
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51
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+
private double pi, radius;
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52
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+
final double PI = 3.14;
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53
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+
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54
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+
public Circle(double radius) {
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55
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+
this.pi = 3.14;
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56
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+
}
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57
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+
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58
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+
public Circle(double radius, double pi) {
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59
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+
super();
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|
60
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+
this.radius = radius;
|
|
61
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+
this.pi = pi;
|
|
62
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+
}
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63
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+
|
|
64
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+
public double getPi() {
|
|
65
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+
return pi;
|
|
66
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+
}
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|
67
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+
|
|
68
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+
public void setPi(double pi) {
|
|
69
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+
this.pi = pi;
|
|
70
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+
}
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71
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+
|
|
72
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+
public double getRadius() {
|
|
73
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+
return radius;
|
|
74
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+
}
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|
75
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+
|
|
76
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+
public void setRadius(double radius) {
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|
77
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+
this.radius = radius;
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|
78
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+
}
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|
79
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+
|
|
80
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+
void area() {
|
|
81
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+
System.out.print("面積：" + (radius * radius * pi));
|
|
82
|
+
}
|
|
83
|
+
}
|
|
84
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+
|
|
46
85
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```
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3
コード追加
title
CHANGED
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File without changes
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body
CHANGED
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@@ -7,4 +7,40 @@
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7
7
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円周率>3
|
|
8
8
|
面積：75.0 円周：30.0
|
|
9
9
|
-----
|
|
10
|
-
この問題を解いているのですがいまだ解けていません...
|
|
10
|
+
この問題を解いているのですがいまだ解けていません...
|
|
11
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+
|
|
12
|
+
```Java
|
|
13
|
+
package en12;
|
|
14
|
+
|
|
15
|
+
import java.io.BufferedReader;
|
|
16
|
+
import java.io.IOException;
|
|
17
|
+
import java.io.InputStreamReader;
|
|
18
|
+
|
|
19
|
+
public class Ex0512 {
|
|
20
|
+
|
|
21
|
+
|
|
22
|
+
public static void main(String[] args) throws IOException {
|
|
23
|
+
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
|
|
24
|
+
try {
|
|
25
|
+
System.out.print("半径>");
|
|
26
|
+
String str = br.readLine();
|
|
27
|
+
double radius = Double.parseDouble(str);
|
|
28
|
+
try {
|
|
29
|
+
System.out.print("円周率>");
|
|
30
|
+
String str1 = br.readLine();
|
|
31
|
+
if(str1 == null || str1.length() == 0){
|
|
32
|
+
Circle C= new Circle(radius);
|
|
33
|
+
C.area();
|
|
34
|
+
}
|
|
35
|
+
double pi = Double.parseDouble(str1);
|
|
36
|
+
Circle B = new Circle(radius, pi);
|
|
37
|
+
B.area();
|
|
38
|
+
} catch (NumberFormatException e) {
|
|
39
|
+
System.out.println("円周は数値を入力してください");
|
|
40
|
+
}
|
|
41
|
+
} catch (NumberFormatException e) {
|
|
42
|
+
System.out.println("半径は数値を入力してください");
|
|
43
|
+
}
|
|
44
|
+
}
|
|
45
|
+
}
|
|
46
|
+
```
|
2
なし
title
CHANGED
|
File without changes
|
body
CHANGED
|
File without changes
|
1
特になし
title
CHANGED
|
File without changes
|
body
CHANGED
|
File without changes
|