回答編集履歴
2
追記
test
CHANGED
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@@ -101,3 +101,59 @@
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101
101
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予想予 -> 予想予
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102
102
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103
103
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```
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104
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+
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105
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+
**追記**
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106
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+
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107
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マルチバイト文字が UTF-8 ではなく、Shift-JIS だと分かっていたとすれば、
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108
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109
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```C++
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110
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+
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111
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#include <iostream>
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112
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113
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#include <string>
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114
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115
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#include <sstream> // ostringstream
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116
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117
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using namespace std;
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118
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119
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120
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121
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bool isleading(unsigned char c) { return (c ^ 0x20) - 0xa1 < 60u; }
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122
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123
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124
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125
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string bs2(const string& s)
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126
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127
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{
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128
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129
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ostringstream oss;
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130
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131
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for (const char *p = s.c_str(); *p; p++) {
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132
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133
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oss << *p;
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134
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135
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if (*p == '\') oss << '\';
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136
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137
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else if (isleading(*p)) oss << *++p;
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138
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+
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139
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}
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140
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+
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141
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return oss.str();
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142
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+
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143
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}
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144
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+
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145
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146
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+
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147
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int main()
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148
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149
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{
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150
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+
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151
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string a[] = { "あい\うえお\かきくけこ", "表層", "予想予" };
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152
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+
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153
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for (string& s : a)
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154
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+
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155
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cout << s << " -> " << bs2(s) << endl;
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156
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+
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157
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}
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158
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+
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159
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```
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1
実行結果の修正
test
CHANGED
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@@ -94,10 +94,10 @@
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94
94
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95
95
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```text
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96
96
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97
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+
あい\うえお\かきくけこ -> あい\うえお\かきくけこ
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98
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+
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97
99
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表層 -> 表層
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98
100
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99
101
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予想予 -> 予想予
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100
102
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101
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-
あい\うえお\かきくけこ -> あい\うえお\かきくけこ
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102
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-
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103
103
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```
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