質問編集履歴
4
コード追加
test
CHANGED
File without changes
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test
CHANGED
@@ -89,3 +89,81 @@
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89
89
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}
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90
90
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91
91
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```
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92
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+
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93
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+
```Java
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94
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+
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95
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+
package en12;
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96
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+
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97
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+
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98
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+
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99
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+
public class Circle {
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100
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+
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101
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+
private double pi, radius;
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102
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+
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103
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+
final double PI = 3.14;
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104
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+
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105
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+
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106
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+
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107
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+
public Circle(double radius) {
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108
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+
|
109
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+
this.pi = 3.14;
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110
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+
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111
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+
}
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112
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+
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113
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+
|
114
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+
|
115
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+
public Circle(double radius, double pi) {
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116
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+
|
117
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+
super();
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118
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+
|
119
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+
this.radius = radius;
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120
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+
|
121
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+
this.pi = pi;
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122
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+
|
123
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+
}
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124
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+
|
125
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+
|
126
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+
|
127
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+
public double getPi() {
|
128
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+
|
129
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+
return pi;
|
130
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+
|
131
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+
}
|
132
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+
|
133
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+
|
134
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+
|
135
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+
public void setPi(double pi) {
|
136
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+
|
137
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+
this.pi = pi;
|
138
|
+
|
139
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+
}
|
140
|
+
|
141
|
+
|
142
|
+
|
143
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+
public double getRadius() {
|
144
|
+
|
145
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+
return radius;
|
146
|
+
|
147
|
+
}
|
148
|
+
|
149
|
+
|
150
|
+
|
151
|
+
public void setRadius(double radius) {
|
152
|
+
|
153
|
+
this.radius = radius;
|
154
|
+
|
155
|
+
}
|
156
|
+
|
157
|
+
|
158
|
+
|
159
|
+
void area() {
|
160
|
+
|
161
|
+
System.out.print("面積:" + (radius * radius * pi));
|
162
|
+
|
163
|
+
}
|
164
|
+
|
165
|
+
}
|
166
|
+
|
167
|
+
|
168
|
+
|
169
|
+
```
|
3
コード追加
test
CHANGED
File without changes
|
test
CHANGED
@@ -17,3 +17,75 @@
|
|
17
17
|
-----
|
18
18
|
|
19
19
|
この問題を解いているのですがいまだ解けていません...
|
20
|
+
|
21
|
+
|
22
|
+
|
23
|
+
```Java
|
24
|
+
|
25
|
+
package en12;
|
26
|
+
|
27
|
+
|
28
|
+
|
29
|
+
import java.io.BufferedReader;
|
30
|
+
|
31
|
+
import java.io.IOException;
|
32
|
+
|
33
|
+
import java.io.InputStreamReader;
|
34
|
+
|
35
|
+
|
36
|
+
|
37
|
+
public class Ex0512 {
|
38
|
+
|
39
|
+
|
40
|
+
|
41
|
+
|
42
|
+
|
43
|
+
public static void main(String[] args) throws IOException {
|
44
|
+
|
45
|
+
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
|
46
|
+
|
47
|
+
try {
|
48
|
+
|
49
|
+
System.out.print("半径>");
|
50
|
+
|
51
|
+
String str = br.readLine();
|
52
|
+
|
53
|
+
double radius = Double.parseDouble(str);
|
54
|
+
|
55
|
+
try {
|
56
|
+
|
57
|
+
System.out.print("円周率>");
|
58
|
+
|
59
|
+
String str1 = br.readLine();
|
60
|
+
|
61
|
+
if(str1 == null || str1.length() == 0){
|
62
|
+
|
63
|
+
Circle C= new Circle(radius);
|
64
|
+
|
65
|
+
C.area();
|
66
|
+
|
67
|
+
}
|
68
|
+
|
69
|
+
double pi = Double.parseDouble(str1);
|
70
|
+
|
71
|
+
Circle B = new Circle(radius, pi);
|
72
|
+
|
73
|
+
B.area();
|
74
|
+
|
75
|
+
} catch (NumberFormatException e) {
|
76
|
+
|
77
|
+
System.out.println("円周は数値を入力してください");
|
78
|
+
|
79
|
+
}
|
80
|
+
|
81
|
+
} catch (NumberFormatException e) {
|
82
|
+
|
83
|
+
System.out.println("半径は数値を入力してください");
|
84
|
+
|
85
|
+
}
|
86
|
+
|
87
|
+
}
|
88
|
+
|
89
|
+
}
|
90
|
+
|
91
|
+
```
|
2
なし
test
CHANGED
File without changes
|
test
CHANGED
File without changes
|
1
特になし
test
CHANGED
File without changes
|
test
CHANGED
File without changes
|