shared c constants in a header

Question

I want to share certain C string constants across multiple c files. The constants span multiple lines for readability:

const char *QUERY = \"SELECT a,b,c \"
         


        

Answer 1

You could use static consts, to all intents and purposes your effect will be achieved.

myext.h:

#ifndef _MYEXT_H
#define _MYEXT_H
static const int myx = 245;
static const unsigned long int myy = 45678;
static const double myz = 3.14;
#endif

myfunc.h:

#ifndef MYFUNC_H
#define MYFUNC_H
void myfunc(void);
#endif

myfunc.c:

#include "myext.h"
#include "myfunc.h"
#include 

void myfunc(void)
{
    printf("%d\t%lu\t%f\n", myx, myy, myz);
}

myext.c:

#include "myext.h"
#include "myfunc.h"
#include 

int main()
{
    printf("%d\t%lu\t%f\n", myx, myy, myz);
    myfunc();
    return 0;
}