error: 'my_struct' does not name a type

[keet]

Hello, might anyone be able to help with a C++ problem I'm encountering?

Hello, when I try to compile my C++ program, the compiler says, "error: 'S_Time' does not name a type." However, that struct is defined in a header file that I #include-d in the header file that the compiler cites in the error message.

Other files are using that struct with no problems.

This is the file that it's complaining about (not actual names):

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#ifndef INTEGRATION_H
#define INTEGRATION_H

#include "file.h"
#include "b_sort.h"
#include "p_weeks.h"
#include "s_times.h"

struct Service_B {
	S_Time s_time;
	int x {0};
	sys_days y;
};

vector<Service_B> make_sbs();

#endif

and then the s_times.h file where S_Time is defined:

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#ifndef S_TIMES_H
#define S_TIMES_H

#include "cs.h"
#include "c_web.h"
#include "c_file.h"

struct S_Time {
	Cs cs;
	string time;
	string id;
};

void print_s_times();
vector<S_Time> get_s_times_from_cm();

#endif

Thank you!

[mike155]

Please take a look at: https://stackoverflow.com/questions/840 ... ame-a-type

[GDH-gentoo]

Hello, when I try to compile my C++ program, the compiler says, "error: 'S_Time' does not name a type."

Which usage of name S_Time is it complaining about? The declaration of member s_time of class Service_B, the declaration of function get_s_times_from_cm(), or something else?

[keet]

Please take a look at: https://stackoverflow.com/questions/840 ... ame-a-type

I should have noted that the line it's saying has the error is not the one with the vector; it's this one:

Code: Select all

struct Service_B {
   S_Time s_time; 

[keet]

Hello, when I try to compile my C++ program, the compiler says, "error: 'S_Time' does not name a type."

Which usage of name S_Time is it complaining about? The declaration of member s_time of class Service_B, the declaration of function get_s_times_from_cm(), or something else?

Sorry, it's the part where I am declaring the Service_B struct/class.

[GDH-gentoo]

Sorry, it's the part where I am declaring the Service_B struct/class.

Then, the definition of class S_Time somehow is not visible where member s_time is declared, possibly pointing at some problem in the included source files. Since you posted a modified version of them, I can't tell why exactly is that.

[mike155]

So it's basically the code below that leads to an error?

Code: Select all

struct S_Time {
   int i;
};

struct Service_B {
   S_Time s_time;
   int x;
};

int main() {

}

Try:

Code: Select all

struct Service_B {
   struct S_Time s_time;
   int x;
};

[GDH-gentoo]

The struct keyword should not be needed in the declarations of members of Service_B, unless the name S_Time is also used here for something declared in global namespace scope that is not a type.

[Hu]

keet: when you want help with a problem, please provide it in a form where we can reproduce the error you want to solve. If you want to rename members, that is fine, but what you give us should be a compiler input that you expect to work and that, if we fix the one problem about which you are asking, should work. In this case, several headers were not shown at all, and you trimmed the compiler error message to not tell which line it rejects.

[keet]

Thank you for your help. It's working now. The forum post that mike155 linked to, even though it didn't fix the problem, did teach me not to put #using statements in header files. There were some circular dependencies that I fixed by moving the struct declaration and its related functions to a different file.