[src]
#include < stdlib.h >
#include < iostream.h>
#include < string >

void main()
{
char buffer[20]; //the size of buffer depend on your need
std::string target;
_itoa(25,buffer,10) // 25 is number to convert,10 is radix
target=buffer;

}[/src]

More at: http://msdn.microsoft.com/library/default....t_itoa_itow.asp