C++中的vector容器

 1 #include <vector>
 2 using namespace std;
 3 
 4 struct NPC
 5 {
 6     char * name;
 7     int age;
 8     float high;
 9 };
10 int main(){
11 
12     //练习使用vector数组
13     bool isKong = false;
14     NPC player = {0};
15     NPC players[3] = { { "ralian", 18, 170.0f }, { "xer.m", 21, 167.2f }, { "1ass o", 24, 164.8f } };
16     vector<NPC> player1(3,{ "ralian", 18, 170.0 });
17     vector<NPC> player2(3, {"tx.m",21,167.2});
18     vector<NPC> player3(players,players+3);
19     player = player3.front();//获取数组第一个元素
20     player = player3.back();//获取数组最后一个元素
21     isKong = player3.empty();//看数组是否为空
22     player1.swap(player2);
23     swap(player1, player2);
24     player2.clear();//清空数组
25     isKong = player2.empty();
26     //使用迭代器遍历数组
27     vector<NPC>::iterator itor;
28     for (itor = player3.begin(); itor != player3.end(); ++itor)//注意for循环里面用分号不是逗号
29     {
30         printf_s("name=%s,age=%d,high=%f\n", itor->name, itor->age, itor->high);
31     }
32     player2.push_back({ "xiaojian", 22, 158.0f });//向尾部插入元素
33     player1.insert(player1.end(), { "xm", 53, 120.5f });
34     player1.insert(player1.begin()+1,10,{ "soug", 33, 117.6f });
35     player1.pop_back();//删除结尾的元素
36     player1._Pop_back_n(3);//删除结尾的最后3元素
37     player1.erase(player1.begin()+2);//删除数组下标为2的元素
38     player1.erase(player1.begin() + 1, player1.begin() + 3);//删除数组下标为[1,3)的元素
39     player1.erase(player1.begin() + 1, player1.end());//删除数组下标从1开始到最后一个元素
40     return 0;
41 }