[Dev-C++] what is wrong with the code

[Dawood V. <da...@ku...>]

	can anybody let me know, why the code below is not running.


#include <iostream.h>
#include <stdlib.h>
#include <string>


int main()
{
   char ch = 'z';
   string p = ch;

   p.push_back(ch);

       system("PAUSE");
       return 0;
}