Problem with Class for processing of strings

Question

I read lines from a text file and would like to repeated delimiters as \t\t. Normally I have between delimiters a parameter but for readability reasons it is sometimes nice to use strings as \t\t\t in order to line out text sequences.

I wrote a class in my main.cpp that worked well. Because I would like to keep my main.cpp as compact possible, I tried to create a class file with header file. I did the forward declaration in the header file, and pasted the working class member in the class.cpp file.

The Class uses string type variables that are declared in the class.cpp. When compiling the compiler gives me an error saying that "string does not name a type". I guess there is something wrong with the moment I do the include of the string.h header.

It is included in the Main.cpp file. Should I include it also in the header file for the class or in the class.cpp file. I understood from previous exchanges that including libraries everywhere should be avoided.

Thanks in advance,

Stefan

Sorry, I forgot to define strings as std::string, what seemed to solve the problem, but when the last string type definition was modified to std::string the compiler gave me again errors of the same type. — noste99
– noste99, Commented Jul 31, 2011 at 12:08

Bo Persson · Accepted Answer · 2011-07-31 11:33:47Z

1

If you want to use C++ std::string you should include the <string> header.

The similarly named <string.h> is for C language string functions.

answered Jul 31, 2011 at 11:33

Bo Persson

92.9k31 gold badges153 silver badges211 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

pyroscope · Accepted Answer · 2011-07-31 11:31:33Z

1

Header files should be self-contained, i.e. include all the things they require for themselves (like types they refer to). To prevent bad performance and other issues, so-called include guards prevent repeated inclusion.

answered Jul 31, 2011 at 11:31

pyroscope

4,1581 gold badge20 silver badges13 bronze badges

Comments

Mat · Accepted Answer · 2011-07-31 11:32:05Z

1

You need to include the .h file in all other files (.h or .cpp) that use the types/functions you declare in the header.

class.cpp should include class.h. main.cpp should include class.h if it uses your string class.

answered Jul 31, 2011 at 11:32

Mat

208k41 gold badges407 silver badges423 bronze badges

Collectives™ on Stack Overflow

Problem with Class for processing of strings

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related