Thread: variable modified ''at file scope

I have a program where I get the error:
variable modified 'artikel'at file scope
char artikel[ARTNAME];

I think I have to add a #define, but I don't understand exactly which one.
Please help me ?

Here is my Code:

Code:

#include <stdio.h>
#include <string.h>
    
   
   
    const int ARTNAME = 100;


    typedef struct artikel{
        char artikel[ARTNAME];
        int anzahl;
    } artikel;


    
    
    
    int main(){
        
    }

Yes, "ARTNAME" should be a #define.