what is the best way to convert int to string according to c++ standard code example

Example 1: change int to string cpp

#include <string> 

std::string s = std::to_string(42);

Example 2: convert int to string c++

int x = 5;
string str = to_string(x);

Example 3: convert a int to string c++

#include <iostream>
#include<string>
using namespace std;
int main()
{
int i = 11;
float f = 12.3;
string str = to_string(i);
strinf fstr = to_string(f);
}

Example 4: how to turn int into string c++

int a = 10;
char *intStr = itoa(a);
string str = string(intStr);