get int out of string with spaces

[hossii]

How can I extract the number out of the string:

string my_sting = "item code = 9";

I want to get the '9' out of the string and store it in a separate int variable.
I tried using sstream library and was having trouble.

[Catfish666]

If you are using a C++11 compiler and the regex library is available:

http://www.cplusplus.com/reference/regex/
http://en.cppreference.com/w/cpp/regex

You can use the regex library to "extract" the number as a match, then use a C++11 function std::stoi() to actually convert the match to an int.

http://www.cplusplus.com/reference/string/stoi/