Thread: need help

ok i did this prog, but i get like 20 errors like this :
Error: noname00.cpp(67,51):Cannot convert 'void (*)(char *,long)' to 'void (*)()'
Error: noname00.cpp(67,51):Type mismatch in parameter 'fill' in call to 'fill_array(void *,long,void (*)())'

this is my prog

Code:

#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <time.h>



void fillchar(char *a, long len);
void fillshort(short *a, long len);
void fillong(long *a, long len);
void fillfloat(float *a, long len);
void filldouble(double *a, long len);



void printchar(char *a, long s, long e);
void printshort(short *a, long s, long e);
void printlong(long *a, long s, long e);
void printfloat(float *a, long s, long e);
void printdouble(double *a, long s, long e);



void fill_array(void *arr, long len, void (*fill)());
void display_array(void *arr, long start, long end, void (*d)());
void wait(long sec);

unsigned init;

main()
{



   char c[1000];
   short s[100];
   long l[100];
   float f[100];
   double d[100];
   int number, i;
   long index[2];

   while (!kbhit())
     {
       srand(++init);
       if(init == 65535)
          init = 1;
       number = rand() % 5 + 1;


       do
          {
            for (i = 0; i < 2; i++)
              index[i] = (number != 1) ? rand()%100 : rand()%1000;
          } while (index[0] >= index[1]);

       wait(3);
       printf("\033[2J\n");



       printf("\033[%d;%dm", 31+number, 42+number);

       switch(number)
         {
          case 1:    printf("C H A R :\n\n");
                     fill_array(c, 1000, fillchar);
                     display_array(c, index[0], index[1], printchar);
                     break;
         case 2:
                    printf("S H O R T :\n\n");
                    fill_array(s, 100, fillshort);
                    display_array(s, index[0], index[1], printshort);
                    break;
         case 3:
                    printf("L O N G :\n\n");
                    fill_array(l, 100, fillong);
                    display_array(l, index[0], index[1] ,printlong);
                    break;
         case 4:
                    printf("F L O A T :\n\n");
                    fill_array(f, 100, fillfloat);
                    display_array(d, index[0], index[1], printfloat);
                    break;
         case 5:
                    printf("D O U B L E :\n\n");
                    fill_array(d, 100, filldouble);
                    display_array(d, index[0], index[1], printdouble);
         }
     
}
   printf("\033[0m");
}



void fill_array(void *arr, long len, void (*fill)(void*, long))
{
   (*fill)(arr, len);
}


void fillchar(char *a, long len)
{
   long i;
   srand(++init);
   for (i = 0; i < len; i++)
   {
   a[i] = (rand() % 96) + 32;
   }
}


void fillshort(short *a, long len)
{
   long i;
   srand(++init);
   for (i = 0; i < len; i++)
   a[i] = rand();
}


void fillong(long *a, long len)
{
   long i;
   srand(++init);
   for (i = 0; i < len; i++)
   a[i] = (long) rand() * rand();
}


void fillfloat(float *a, long len)

{
   long i;
   srand(++init);
   for (i = 0; i < len; i++)
   a[i] = (float) rand() / 32767;
}


void filldouble(double *a, long len)

{
   long i;
   srand(++init);
   for (i = 0; i < len; i++)
   a[i] = (double) rand() / 32767;
}



void display_array(void *arr, long start, long end, void (*f)(void*, long, long))
{
   (*f)(arr,start, end);
}


void printchar(char *a, long s, long e)
{
   long i;
   for (i = s;  i <= e; i++)
   printf("%c", a[i]);
}


void printshort(short *a, long s, long e)
{
   long i;
   for (i = s;  i <= e; i++)
   {
   printf("%5hd  ", a[i]);
   if (((i+1)%10) == 0)
   printf("\n");
   }
}


void printlong(long *a, long s, long e)
{
   long i;
   for (i = s;  i <= e; i++)
   {
   printf("%10ld  ", a[i]);
   if (((i+1)%6) == 0)
   printf("\n");
   }
}


void printfloat(float *a, long s, long e)
{
   long i;
   for (i = s;  i <= e; i++)
   {
   printf("%f  ", a[i]);
   if (((i+1)%6) == 0)
   printf("\n");
   }
}


void printdouble(double *a, long s, long e)
{
   long i;
   for (i = s;  i <= e; i++)
   printf("%.12f  ", a[i]);
}


void wait(long sec)
{
   long start, current;
   time(&start);
   do
   {
   time(&current);
   } while ((current - start) < sec);
}

so what did i do wrong? i put the peice of prog in red where i get my errors