std vector c 2b 2b

1#include <vector>
2
3int main() {
4  std::vector<int> v;
5  v.push_back(10); // v = [10];
6  v.push_back(20); // v = [10, 20];
7  
8  v.pop_back(); // v = [10];
9  v.push_back(30); // v = [10, 30];
10  
11  auto it = v.begin();
12  int x = *it; // x = 10;
13  ++it;
14  int y = *it; // y = 30
15  ++it;
16  bool is_end = it == v.end(); // is_end = true
17  
18  return 0;
19}

1#include <vector>
2std::vector<std::string> x;

1 Vector functions in C++
2 --------------------
3 clear()  // remove all the elements of the vector container
4 insert()  // Inserts new elements before the element at the specified position
5 emplace()  // Extends the container by inserting new element at position
6 erase()   // Remove elements from a container from the specified position or range
7 push_back()  // Push the elements into a vector from the back
8 emplace_back() // Constructs an element in-place at the end  
9 pop_back()  // Pop or remove elements from a vector from the back   
10 resize()  // Changes the number of elements stored     
11 swap() // Swap the contents of one vector with another vector of same type. Sizes may differ.