converting to string c 2b 2b

1// to_string example
2#include <iostream>   // std::cout
3#include <string>     // std::string, std::to_string
4
5int main ()
6{
7  std::string pi = "pi is " + std::to_string(3.1415926);
8  std::string perfect = std::to_string(1+2+4+7+14) + " is a perfect number";
9  std::cout << pi << '\n';
10  std::cout << perfect << '\n';
11  return 0;
12}

1std::to_string(23213.123)

1- Writing your own conversion function, the simple:
2template<class T> string toString(const T& x) {
3	ostringstream ss;
4	ss << x;
5	return ss.str();
6}
7- Since C++11 you can also use the std::to_string:
8 string s = to_string(0x12f3); // after this the string s contains "4851"

1int i=11;
2string str= to_string(i);

1#include <iostream>  
2#include <boost/lexical_cast.hpp>  
3using namespace std;  
4int main()  
5{  
6 int i=11;  
7 string str = boost::lexical_cast<string>(i);  
8cout<<"string value of integer i is :"<<str<<"\n";  
9  
10}