how to change a number in a vector for c++ code example

Example 1: convert vector to set c++

#include <set>
std::set<std::string> set_name(vector_name.begin(), vector_name.end());

Example 2: c++ initialize a vector

#include <bits/stdc++.h> 
#include <vector> 
using namespace std; 
  
int main() 
{ 
// This vector initializes with the values: 10, 20, and 30
  vector<int> vect{ 10, 20, 30 }; 

    return 0; 
}