Question

How can I parse integers passed to an application as command line arguments if the app is unicode?

Unicode apps have a main like this:

int _tmain(int argc, _TCHAR* argv[]) 

argv[?] is a wchar_t*. That means i can’t use atoi. How can I convert it to an integer? Is stringstream the best option?

Answer 1

if you have a TCHAR array or a pointer to the begin of it, you can use std::basic_istringstream to work with it:

std::basic_istringstream<_TCHAR> ss(argv[x]); int number; ss >> number; 

Now, number is the converted number. This will work in ANSI mode (_TCHAR is typedef’ed to char) and in Unicode (_TCHAR is typedef`ed to wchar_t as you say) mode.