Check out example codes for "how to make a vector in c++". It will help you in understanding the concepts better.

Code Example 1

#include <vector>

using namespace std;

int main(){
  vector<int> v;
  //vector<type> name
  return 0;

Code Example 2

// First include the vector library:
#include <vector>

// The syntax to create a vector looks like this:
std::vector<type> name;

// We can create & initialize "lol" vector with specific values:
std::vector<double> lol = {66.666, -420.69};

// it would look like this: 66.666 | -420.69

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