How can i use sstream in MFC

[Hermitsky]

I tried to use istringstream function in MFC to convert CString to Int, but failed .....

CString cisbn;
int l;
.........
..........
istringstream temp(cisbn.substr(12,1));
temp>>l;

i got this error message:
E:\Temporary\mfc\b\bDoc.cpp(158) : error C2065: 'istringstream' : undeclared identifier
E:\Temporary\mfc\b\bDoc.cpp(158) : error C2146: syntax error : missing ';' before identifier 'temp'
E:\Temporary\mfc\b\bDoc.cpp(158) : error C2065: 'temp' : undeclared identifier

any help would be greatly appreciated!

[Stack Overflow]

Hello,

I am pretty sure you can include header files in MFC. For instance:

#include <sstream> // Include istringstream header
using namespace std;

- Stack Overflow

[hk_mp5kpdw]

Maybe... std::istringstream instead? Don't know what your header situation looks like (did you take into account the namespace issue in some fashion) so that's just a guess.

[Hermitsky]

yes
i have already added the header
#include<sstream>
using namespace std;

is there any way else to convert CString to int?

[Fordy]

http://msdn.microsoft.com/library/de...4.2c_.atol.asp

[Stack Overflow]

Hello,

There are a few ways to convert a CString to an integer. Fordy provided a good link. The main idea is to use the *toi or *toul functions. For further reference to CString conversion, view the following links:

• CString Management: Converting a CString to an Integer
• MFC: Convert CString data to Integer

If you are curious about ttoi() or other functions used in the previous link, you can always view this guide on Language Portable Code. Just do a search for the function names, i.e., ttoi().


- Stack Overflow