29 lines
757 B
C++
29 lines
757 B
C++
// vector 的使用
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#include <bits/stdc++.h>
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using namespace std;
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int main()
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{
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vector<int> v1;
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// int mSize = v1.size(); // 获取容器中元素的个数
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int mCapacity = v1.capacity(); // 获取容器的容量
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int cnt = 0; // 扩容次数
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cout << "初始容量: " << mCapacity << endl;
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for (int i = 0; i < 1000; i++)
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{
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v1.push_back(i); // 向容器中添加元素
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// cout << "size = " << v1.size() << " capacity = " << v1.capacity() << endl;
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if (mCapacity != v1.capacity())
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{
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mCapacity = v1.capacity();
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cout << "第" << ++cnt << "次扩容, "
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<< "当前容量为: " << v1.capacity() << endl;
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}
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}
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return 0;
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}
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