#include <iostream>
#include <vector>
using namespace std;
int main()
{
vector<int> vec1;
for (int k=0;k<20;k++)
{
vec1.push_back(k);
cout << "size:"<<vec1.size()<<" capacity:"<<vec1.capacity()<< endl;
}
system("pause");
return 0;
}
===============================================
size:1 capacity:1
size:2 capacity:2
size:3 capacity:3
size:4 capacity:4
size:5 capacity:6
size:6 capacity:6
size:7 capacity:9
size:8 capacity:9
size:9 capacity:9
size:10 capacity:13
size:11 capacity:13
size:12 capacity:13
size:13 capacity:13
size:14 capacity:19
size:15 capacity:19
size:16 capacity:19
size:17 capacity:19
size:18 capacity:19
size:19 capacity:19
size:20 capacity:28
请按任意键继续. . .