回答編集履歴
4
ソース修正
test
CHANGED
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@@ -34,9 +34,17 @@
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34
34
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35
35
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// 英字以外をスキップ
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36
36
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37
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-
while (!isalpha(*cptr)) {
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37
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+
while (!isalpha(*cptr) && *cptr) {
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38
38
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39
39
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cptr++;
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40
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+
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41
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+
}
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42
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+
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43
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+
// 終端の時は終了
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44
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+
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45
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+
if (*cptr == '\0') {
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46
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+
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47
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+
break;
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40
48
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41
49
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}
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42
50
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@@ -57,8 +65,6 @@
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57
65
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}
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58
66
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59
67
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//
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60
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-
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61
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-
index--; // 行き過ぎた分を戻す
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62
68
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63
69
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for (int i = 0; i < index; i++) {
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64
70
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3
ソース修正
test
CHANGED
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@@ -62,7 +62,7 @@
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62
62
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63
63
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for (int i = 0; i < index; i++) {
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64
64
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65
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-
p
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65
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+
printf("str[%d] : [%s]\n", i, buf[i]);
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66
66
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67
67
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}
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68
68
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@@ -78,32 +78,28 @@
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78
78
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79
79
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```text
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80
80
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81
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-
usr ~/Project/test % cc c6.c
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82
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-
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83
81
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usr ~/Project/test % ./a.out
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84
82
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85
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-
It
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83
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+
str[0] : [It]
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86
84
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87
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-
is
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85
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+
str[1] : [is]
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88
86
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89
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-
good
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87
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+
str[2] : [good]
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90
88
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91
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-
to
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89
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+
str[3] : [to]
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92
90
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93
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-
see
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91
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+
str[4] : [see]
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94
92
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95
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-
you
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93
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+
str[5] : [you]
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96
94
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97
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-
Thank
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95
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+
str[6] : [Thank]
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98
96
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99
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-
you
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97
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+
str[7] : [you]
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100
98
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101
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-
for
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99
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+
str[8] : [for]
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102
100
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103
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-
coming
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101
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+
str[9] : [coming]
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104
102
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105
103
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usr ~/Project/test %
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106
104
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107
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-
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108
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-
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109
105
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```
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2
誤記修正
test
CHANGED
|
@@ -32,7 +32,7 @@
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32
32
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33
33
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while (*cptr) {
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34
34
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|
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35
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-
//
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35
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+
// 英字以外をスキップ
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36
36
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37
37
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while (!isalpha(*cptr)) {
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38
38
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1
ソース追記
test
CHANGED
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@@ -3,3 +3,107 @@
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3
3
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単語を判定するには、ctype.hをincludeしてisalnumで判断しましょう。
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4
4
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5
5
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[ctype.h](http://www.c-tipsref.com/reference/ctype.html)
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6
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+
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7
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+
「追記」・・・遅くなりましたがｗ
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8
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+
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9
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+
```c
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10
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+
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11
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+
#include <stdio.h>
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12
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+
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13
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+
#include <ctype.h>
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14
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+
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15
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+
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16
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+
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17
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+
int main(void)
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18
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+
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19
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+
{
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20
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+
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21
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+
const char text[] = "It is good to see you. Thank you for coming.";
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22
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+
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23
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+
//
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24
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+
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25
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+
const char *cptr = text;
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26
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+
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27
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//
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|
28
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+
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|
29
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+
char buf[128][32]; // 数字は適当
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30
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+
|
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31
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+
int index = 0;
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32
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+
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33
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+
while (*cptr) {
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34
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+
|
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35
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+
// 空白をスキップ
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|
36
|
+
|
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37
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+
while (!isalpha(*cptr)) {
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38
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+
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|
39
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+
cptr++;
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40
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+
|
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41
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+
}
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42
|
+
|
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43
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+
// 英字だけをコピー
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44
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+
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|
45
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+
char *dptr = buf[index];
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|
46
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+
|
|
47
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+
while (isalpha(*cptr)) {
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48
|
+
|
|
49
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+
*dptr++ = *cptr++;
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|
50
|
+
|
|
51
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+
}
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52
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+
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|
53
|
+
*dptr = '\0'; // 行末
|
|
54
|
+
|
|
55
|
+
index++;
|
|
56
|
+
|
|
57
|
+
}
|
|
58
|
+
|
|
59
|
+
//
|
|
60
|
+
|
|
61
|
+
index--; // 行き過ぎた分を戻す
|
|
62
|
+
|
|
63
|
+
for (int i = 0; i < index; i++) {
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|
64
|
+
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|
65
|
+
puts(buf[i]);
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|
66
|
+
|
|
67
|
+
}
|
|
68
|
+
|
|
69
|
+
//
|
|
70
|
+
|
|
71
|
+
return 0;
|
|
72
|
+
|
|
73
|
+
}
|
|
74
|
+
|
|
75
|
+
```
|
|
76
|
+
|
|
77
|
+
実行結果
|
|
78
|
+
|
|
79
|
+
```text
|
|
80
|
+
|
|
81
|
+
usr ~/Project/test % cc c6.c
|
|
82
|
+
|
|
83
|
+
usr ~/Project/test % ./a.out
|
|
84
|
+
|
|
85
|
+
It
|
|
86
|
+
|
|
87
|
+
is
|
|
88
|
+
|
|
89
|
+
good
|
|
90
|
+
|
|
91
|
+
to
|
|
92
|
+
|
|
93
|
+
see
|
|
94
|
+
|
|
95
|
+
you
|
|
96
|
+
|
|
97
|
+
Thank
|
|
98
|
+
|
|
99
|
+
you
|
|
100
|
+
|
|
101
|
+
for
|
|
102
|
+
|
|
103
|
+
coming
|
|
104
|
+
|
|
105
|
+
usr ~/Project/test %
|
|
106
|
+
|
|
107
|
+
|
|
108
|
+
|
|
109
|
+
```
|