vector是C++ STL Container中重要的一员，应该是最经常使用的一个数据结构，可以动态增长和收缩，可以随机访问，非常灵活。编程示例如下：

#include <iostream>
#include <vector>
#include <string>

using namespace std;

template <class T>
void print_elements(T& elem) {
	for(auto &x : elem) {
		cout << x << " ";
	}
	cout << endl;
}

int main(int argc, char **argv)
{
	vector<int> v;
	v.reserve(10);
	cout << v.capacity() << endl;
	for(unsigned int i=0;i<6;i++) {
		v.push_back(i*i);
	}
	print_elements(v);
	cout << "size: " << v.size() ;
	cout << ", capacity: " << v.capacity() << endl;
	v.shrink_to_fit();
	cout << "size: " << v.size() ;
	cout << ", capacity: " << v.capacity() << endl;

	auto v2=v;
	cout << "size: " << v2.size() 
	cout << ", capacity: " << v2.capacity() << endl;
	cout << "v == v2 ? " << (v == v2) << endl;

	vector<int> v3({1,3,4,5,6,7});
	print_elements(v3);
	v3.assign(10,3);
	print_elements(v3);
	
	v2.swap(v3);
	print_elements(v3);
	for(auto &x : v3) {
		x=x*x;
	}
	for(auto i=v3.size();i>0;i--) {
		cout << v3.at(i-1) << " " << v3[i-1] << " " ;
	}
	cout << endl;
	print_elements(v3);
	v3.resize(3);
	print_elements(v3);
	v3.erase(v3.begin()+1);
	print_elements(v3);
	v3.clear();
	
	vector<bool> v4;
	v4.assign(10,false);
	for(auto i=v4.size();i>0;i--) {
		cout << v4.at(i-1) << " " ;
	}
	cout << endl;
	for(auto i=v4.size();i>0;i--) {
		if(i % 2 == 0 ) {
			v4[i-1].flip();
		}
	}
	for(auto i=v4.size();i>0;i--) {
		cout << v4.at(i-1) << " " ;
	}
	cout << endl;
	
	return 0;
}

参考资料：

http://www.cplusplus.com/reference/vector/vector/

http://www.cplusplus.com/reference/vector/vector-bool/