第四课--C++之vector

stl中的另一个容器vector

#include <iostream>#include <vector>#include <string>using std::vector;int main(){    vector<std::string> strings(10, "I Love Mark!");    vector<std::string> otherstrings(2, "Yoyoyo");    vector<int> ints(10, 100);    strings.push_back("I So Love Mark!!!"); // 在末尾添加    strings.push_back("I So Love Mark!!!"); // 在末尾添加    strings.assign(10, "I Love Mark!!!!!!");    //strings = otherstrings;   // vector容器级别的交换                    vector.operator=    // 等价于    // strings.opertor=(otherstrings)    strings[1] = otherstrings[1];   // vector容器中的元素级别的交换        string.operator=    // 等价于    // (string &(strings.operator[](1))).operator=(string &(otherstrings.operator[](1)))    strings.at(0) = "1000";    // 等价于    // (string &(string.at(0))).operator=(char *"1000")    strings.back() = "666666";    for (std::size_t i = 0; i < strings.size(); ++i)    {        std::cout << strings.at(i) << std::endl;    }    return 0;}

vector中的迭代器


#include <iostream>#include <vector>#include <string>using std::vector;int main(){    vector<std::string> strings(10, "66666");    vector<std::string>::iterator it = strings.begin();    std::cout << *it << std::endl;    std::cout << it->c_str() << std::endl;    //for (vector<std::string>::iterator it = strings.begin(); it != strings.end(); ++it)    //for (auto it = strings.begin(); it != strings.end(); ++it)    // auto是c++11中新加的功能    for (auto it = strings.begin(); it < strings.end(); ++it)   // 也可以使用小于号    {        std::cout << *it << std::endl;    }    return 0;}

erase函数