In my header file I'm getting the
error: ‘string’ has not been declared
error but at the top of the file I have #include <string>, so how can I be getting this error?
views:
366answers:
2
+14
A:
string resides in the std namespace, you have to use std::string or introduce it into the scope via using directives or using declarations.
Georg Fritzsche
2010-05-23 06:38:49
A:
Like Georg said, string resides in the std namespace and is referred to as std::string. If you don't want to go around and change all your code, you can:
#define string std::string
Or (and don't quote me on this) there should be a directive like namespace std to declare that it uses the std namespace by default.
amphetamachine
2010-05-23 06:45:59
No, don't - please. This could break all kind of things.
Georg Fritzsche
2010-05-23 06:53:40
If you don't want to change too much code rather use `using std;` instead. This is a valid feature of C++. Using the preprocessor to "fix" the problem *will* cause all kinds of problems. Please don't do this.
bluebrother
2010-05-23 07:05:00
@bluebrother: You mean `using namespace std;` or `using std::string;`.
KennyTM
2010-05-23 07:32:03
@KennyTm: I presume that is what @amphetamachine meant, but given @Phenom is working on a header file, polluting the global namespace with `using` statements should be discouraged.
Johnsyweb
2010-05-23 08:22:24
Lol this is how "perl hackers" like @amphetamachine do it. String replacement! haha
Johannes Schaub - litb
2010-05-23 10:54:37