vector的size、capacity和max_size

#include <iostream>

#include <algorithm>

#include <vector>

#include <iterator>

#include <string>

using namespace std;

int main(void)

{

vector<string> coll;

coll.reserve(4);

coll.push_back("hey!");

coll.push_back("how");

coll.push_back("are");

coll.push_back("you!");

copy(coll.begin(), coll.end(),

ostream_iterator<string>(cout," "));

cout << endl;

cout << "coll_size: " << coll.size() << endl;

cout << "coll_capacity: " << coll.capacity() << endl;

cout << "coll_max_size: " << coll.max_size() << endl;

coll.insert(find(coll.begin(), coll.end(), "how"), "jie,");

copy(coll.begin(), coll.end(),

ostream_iterator<string>(cout," "));

cout << endl;

cout << "coll_size: " << coll.size() << endl;

cout << "coll_capacity: " << coll.capacity() << endl;

cout << "coll_max_size: " << coll.max_size() << endl;

vector<string>(coll).swap(coll);

copy(coll.begin(), coll.end(),

ostream_iterator<string>(cout," "));

cout << endl;

cout << "coll_size: " << coll.size() << endl;

cout << "coll_capacity: " << coll.capacity() << endl;

cout << "coll_max_size: " << coll.max_size() << endl;

return 0;

}

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