C ++ vector using examples

C++ vector 

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <iterator>

using namespace std;

int main()
{
    vector<string> vec_str;
    vec_str.reserve(6);

    vec_str.push_back("C++,");
    vec_str.insert(vec_str.end(), {"test1","test2","test3","test4"});

    copy(vec_str.cbegin(), vec_str.cend(), ostream_iterator<string>(cout, "  "));
    cout << endl;


    cout << "max_size:" << vec_str.max_size() << endl;
    cout << "size:" << vec_str.size() << endl;
    cout << "capacity:" << vec_str.capacity() << endl;

    swap(vec_str[1],vec_str [ ]);3

    vec_str.insert(find(vec_str.begin(),vec_str.end(),"test1"),"TEST");
    vec_str.back() = "Java";
    copy(vec_str.cbegin(),vec_str.cend(),ostream_iterator<string>(cout,"  "));
    cout << endl;

    cout << "size:" << vec_str.size() << endl;
    cout << "capacity:" << vec_str.capacity() << endl;

    vec_str.pop_back ();
    vec_str.pop_back ();
    vec_str.shrink_to_fit();

    cout << "size:" << vec_str.size() << endl;
    cout << "capacity:" << vec_str.capacity() << endl;

    system("pause");
    return 0;
}

 

++ C, test2 test1 Test3 Test4
MAX_SIZE: 461168601842738790
size: 5
Capacity: 6
C ++, the TEST test2 test1 Test3 the Java
size: 6
Capacity: 6
size: 4
Capacity: 4
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