STL string to integer conversion

[amessbee]

I was wondering if there is a function provided by MS STL, that helps convert string to int(any numeric) type...

looking for your answer,
mudassir!

p.s: I know about atoi, but I want some STL provided function. It may be member function of some class or generic function as in <algorithm>
thanks

 

[ArkM]

C++ Std RTL inherits all data conversion routines from C; no these category routines in STL.
You may use strstrem:

#include <strstream?
string s;
int x;
...
{ istrstream ss(s.c_str()); ss >> x; }

I think, atoi() is much more preferable in that case (it's member of C++ Standard RTL).

 

[uolj]

strstream is deprecated. Use stringstreams in <sstream> instead (which works with standard strings directly):

#include <sstream>
// ...
std::string s("-216");
int x;

std::istringstream ss(s);
ss >> x; // x is now -216

More information:
See 39.2 in the C++ Faq-Lite