#include <iostream>
#include <vector>
#include <string.h>
#include<stdio.h>
using namespace std; 

int main(){
   string s; 
   cin >> s; 
   cout << s; 
   
  
}

This is a C++ code that reads a single input string from the user and then prints it back out to the console. The program first includes several standard C++ libraries, including iostream and string. It then defines a main function, which initializes a string variable 's'. The program reads the input string from the user with the 'cin' function and assigns it to the 's' variable. Finally, the program prints the contents of the 's' variable to the console using the 'cout' function.