/* vector usage */
#include <iostream>
#include <vector>
using namespace std;
static void show_arr(vector <int> & arr) {
int j;
cout << "func:" << __func__ << endl;
for (int j = 0; j < arr.size(); j++) {
cout << arr[j] << endl;
}
cout << endl;
}
static void show_arr_with_it(vector <int> & arr) {
cout << "func:" << __func__ << endl;
vector <int>::iterator it;
for (it = arr.begin(); it != arr.end(); it++) {
cout << "*it: " << *it << endl;
}
cout << endl;
}
int main() {
int a[4] = {1,2,3,4};
vector <int> arr;
/* 0. 添加元素到容器 */
for (int i = 0; i < sizeof(a)/sizeof(int); i++) {
arr.push_back(a[i]);
}
/* 1. 通过下标删除元素 */
for (int j = 0; j < arr.size(); j++) {
if (arr[j] == 2) {
cout << "del:" << arr[j] << endl;
arr.erase(arr.begin() + j);
break;
}
cout << arr[j] << endl;
}
/* 2. 通过下标展示 */
show_arr(arr);
/* 3. 通过迭代器删除 */
for (it = arr.begin(); it != arr.end(); it++) {
if (*it == 3) {
arr.erase(it);
}
}
/* 4. 通过迭代器展示 */
show_arr_with_it(arr);
return 0;
}
