runoob_01_Vector&Iterator

/*
 * @Author: by777
 * @Date: 2025-03-20 19:54:01
 * @LastEditors: by777
 * @LastEditTime: 2025-03-20 20:13:27
 * @FilePath: /cxx_stl/runoob_01.cpp
 * @Description: https://www.runoob.com/cplusplus/cpp-stl-tutorial.html
 * 
 * Copyright (c) 2025 by by777, All Rights Reserved. 
 */
#include <iostream>
#include <vector>
using namespace std;

// g++ -std=c++23 -fmodules-ts -o program main.cpp
int main(int argc, const char** argv) {
    
    vector <int> vec;
    int i;
    cout<<"vector size: "<<vec.size()<<endl;
    for(int i=0; i<5; i++){
        vec.push_back(i);
    }
    cout<<"vector size: "<<vec.size()<<endl;
    for(int i=0; i<5; i++){
        cout<<vec[i]<<endl;
    }

    //使用迭代器iterator
    vector<int>::iterator v = vec.begin();
    while(v != vec.end()){
        std::cout << "value of v:" << *v << std::endl;
        v++;
    }
    
    return 0;
}