質問編集履歴
2
エラーの追加
test
CHANGED
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File without changes
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test
CHANGED
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@@ -50,6 +50,36 @@
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50
50
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51
51
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}
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52
52
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53
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+
#fと置く前に実行したときに出るエラー
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54
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+
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55
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+
Compilation error #stdin compilation error #stdout 0s 4564KB
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56
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+
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57
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+
prog.c: In function ‘main’:
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58
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+
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59
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+
prog.c:17:18: error: lvalue required as left operand of assignment
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60
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+
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61
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+
else if(b*b-4*a*c=0){
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62
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+
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63
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+
^
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64
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+
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65
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+
prog.c:6:1: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
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66
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+
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67
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+
scanf("%d\n",&a);
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68
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+
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69
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+
^~~~~~~~~~~~~~~~
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70
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+
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71
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+
prog.c:8:1: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
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72
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+
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73
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+
scanf("%d\n",&b);
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74
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+
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75
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+
^~~~~~~~~~~~~~~~
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76
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+
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77
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+
prog.c:10:1: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
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78
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+
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79
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+
scanf("%d\n",&c);
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80
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+
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81
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+
^~~~~~~~~~~~~~~~
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82
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+
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53
83
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#fと置いた後
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54
84
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|
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55
85
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int main(void) {
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1
fと置く前のコードの追加
test
CHANGED
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File without changes
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test
CHANGED
|
@@ -2,9 +2,55 @@
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2
2
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3
3
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4
4
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5
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-
#
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5
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+
#fと置く前
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6
6
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7
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+
int main(void) {
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8
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+
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9
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+
int a,b,c;
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10
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+
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11
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+
printf("整数 a を入力してください");
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12
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+
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13
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+
scanf("%d\n",&a);
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14
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+
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15
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+
printf("整数 b を入力してください");
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16
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+
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17
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+
scanf("%d\n",&b);
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18
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+
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19
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+
printf("整数 c を入力してください");
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20
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+
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21
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+
scanf("%d\n",&c);
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22
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+
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23
|
+
double d,e;
|
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24
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+
|
|
25
|
+
if(b*b-4*a*c>0){
|
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26
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+
|
|
27
|
+
d=((double)-b+sqrt((double)b*b-4*a*c))/(2*a);
|
|
28
|
+
|
|
29
|
+
e=((double)-b-sqrt((double)b*b-4*a*c))/(2*a);
|
|
30
|
+
|
|
31
|
+
printf("実数解は%fと%fです",d,e);
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32
|
+
|
|
33
|
+
}
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|
34
|
+
|
|
35
|
+
else if(b*b-4*a*c=0){
|
|
36
|
+
|
|
37
|
+
d=-b/(2*a);
|
|
38
|
+
|
|
39
|
+
printf("実数解は%f(重解)です",d);
|
|
40
|
+
|
|
41
|
+
}
|
|
42
|
+
|
|
43
|
+
else {
|
|
44
|
+
|
|
7
|
-
|
|
45
|
+
printf("実数解はありません");
|
|
46
|
+
|
|
47
|
+
}
|
|
48
|
+
|
|
49
|
+
return 0;
|
|
50
|
+
|
|
51
|
+
}
|
|
52
|
+
|
|
53
|
+
#fと置いた後
|
|
8
54
|
|
|
9
55
|
int main(void) {
|
|
10
56
|
|
|
@@ -27,8 +73,6 @@
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|
27
73
|
f = (double)b*b-4*a*c;
|
|
28
74
|
|
|
29
75
|
if(f>0){
|
|
30
|
-
|
|
31
|
-
//fと置かずにやるとエラーが起こった。何故なのか？
|
|
32
76
|
|
|
33
77
|
d=((double)-b+sqrt(f))/(2*a);
|
|
34
78
|
|