C function pointer not accepted

Question

LabWindow/CVI's C compiler does not seem to work on function pointer. The following simplified code generate compilation errors "missing prototype" at (*ModuleTest)() line and function declaration of FindModuleTest. The same code  with cvi inclues removed has no problem under MS visual C.
#include <stdio.h>
#include <ansi_c.h>
#include <cvidef.h>
#include <windows.h>
#include <cvirte.h>    
 void fa(void);
 void fb(void);
 void fc(void);
 void fd(void);
typedef void (*ModuleTestP)();
struct { char *name;                   ModuleTestP funcptr;} symtab[] = {
        "fa",                       fa,
        "fb",                       fb,
        "fc",                       fc,
        "fd",                       fd
ModuleTestP ModuleTest;
ModuleTestP FindModuleTest(char *name);
int main( int argc, char **argv )
    ModuleTest = FindModuleTest("fa");
    (*ModuleTest)();
ModuleTestP FindModuleTest(char *name)
 int i;
 for (i=0; i<sizeof(symtab)/sizeof(symtab[0]); i++)
  if (strcmp(name, symtab[i].name) == 0) return symtab[i].funcptr;
 return NULL;
void fa(void)
void fb(void)
void fc(void)
void fd(void)
Solved!
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Answer 1

A lot of programmers treat the void declaration in the parameter list as an optional thing but it really should be explicitly stated in the function prototype. The fact that Microsoft allows it to be omitted is not a good practice.
This is one of those practices in programming that goes along with explicitly initializing variables to save a lot of headache and confusion.
Martin Fredrickson
Test Engineer
Northrop Grumman
Advanced Systems and Products
San Diego, CA 92128