回答編集履歴
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answer
CHANGED
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@@ -3,4 +3,37 @@
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3
3
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4
4
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```
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5
5
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CS[j].a = valuepattern[i];
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6
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```
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7
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8
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---
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9
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10
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std::vector の代入は各要素の値コピーが行われます。
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11
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代入元の配列が空でなければ、代入先の配列も空にはなりません。
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12
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```cpp
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#include <iostream>
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#include <vector>
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int main()
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{
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std::vector<int> array1 = {1, 2, 3, 4, 5};
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for (const auto &v : array1)
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std::cout << v << " ";
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std::cout << std::endl;
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std::vector<int> array2;
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std::cout << "array2.size(): " << array2.size() << std::endl;
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array2 = array1; // コピーコンストラクタ
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for (const auto &v : array2)
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std::cout << v << " ";
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std::cout << std::endl;
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}
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32
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33
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```
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34
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35
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```output
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36
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1 2 3 4 5
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37
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array2.size(): 0
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38
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1 2 3 4 5
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6
39
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```
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