CODEWITHSUNDEEP
cstructheaderincludedefinition
David Gash
David Gash

Reputation: 41

Struct defined in header not reconized in C file?

I am organizing my code so that and wanted to move some structure definitions to a header file then use them to declare variables in a separate c file (not main).

Header file:

#ifdef _InitSettingsGuard
#define _InitSettingsGuard

//Structure For Fault Levels
    typedef struct FaultLevel{
    FaultDef ThreePointThreeAux;
    FaultDef Twelve;
    FaultDef Five;
    FaultDef ThreePointThree;
    FaultDef PlusTwelveAux;
    FaultDef NegTwelveAux;
}FaultLevel;

typedef struct FaultLevel{
    FaultDef Test1;
    FaultDef Test2;
    FaultDef Test3;
}FaultLevel;

#endif

And here is my c file which I declare the variables:

#include "InitialSettings.h"

FaultLevel OneFaultLevel;
FaultLevel TwoFaultLevel;
FaultLevel ThreeLevel;

When i try to compile I am getting an error "unknown type name 'FaultLevel'" what am I doing wrong?

Upvotes: 0

Views: 55

Answers (1)

unwind
unwind

Reputation: 400069

This:

#ifdef _InitSettingsGuard
#define _InitSettingsGuard

is wrong, the logic is inverted. You meant

#if !defined _InitSettingsGuard

or the commonly used short form

#ifndef _InitSettingsGuard

The point is to read the rest of the header if the guard symbol is not defined.

Also: there is no type called FaultLevel declared in the header. There is only FaultDef, so either change the usage:

FaultDef OneFaultLevel;

and so on, or change the typedef:ed name, of course. Make up your mind. :)

Upvotes: 3

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