External Delaration for An Array?

Question

I have an array defined in a file and in another I have to use it, for e.g-

/* a.c - defines an array */

int a[] = {1,2,3,4,5,6,7,8,9}; 


/* b.c - declare          


        

Answer 1

Put the variable in the header file only like this:

#ifndef A_DEF
#define A_DEF
int a[] = {1,2,3,4,5,6,7,8,9}; 
#endif

The conditional compilation will not allow variable redefinition. Thus you have access to it from anywhere.