Ansi C how to dinamically call a CONSTANT

Question

How can I dinamically call the right constant defined here as:

#define MyCONSTANT_00 "STATICVALUE"
#define MyCONSTANT_01 "STATICVALUE1"
#define MyCONSTANT_02 "STATICVALUE3"

for (Index = 0; Index < record; Index++) 
{
    myfunction(MyCONSTANT_+Index);
}

This return an error while compiling:

Undefined identifier MyCONSTANT_

If I call the function direclty with the constant it works fine:

  myfunction(MyCONSTANT_00);

Answer 1

You can't:

#define and corresponding replacements are handled by the pre-processor whereas the for loop (and the Index irterator) is handled by the compiler.

There is no looping mechanisms in the pre-processor.

I would suggest to define a static constant array and iterate through it in loop:

const char* const MyCONSTANT[] = {"STATICVALUE", "STATICVALUE1", "STATICVALUE3" }

for (Index = 0; Index < record; Index++) 
{
    myfunction(MyCONSTANT[Index]);
}