Putting a string in system()

I'm trying to make a program that outputs a set string, and a variable into system(). However, I can't make system() accept it.

Code:

#include <iostream>
#include <stdlib.h>  //For system()

using namespace std ;

int main()
{
string name ;
string newstring ;

cout << "Enter a string:" ;
cin >> name ;
newstring = "mkdir "+name;              //Adds mkdir and your input.

system(newstring);              //Is the problem.

//cout << newstring <<endl;              /*For testing*/
}

Note that mkdir is just an example. I've already been advised to type 5 more letters.

system will only accept a C-style string. Fortunately you can convert a std::string to a C-style string with the .c_str() member function.

Do I use it like this?

Code:

.c_str(newstring)

No, like this:

Code:

system(newstring.c_str());

Thanks!