map.c

#include <DS89C4xx.h>
#include <stdio.h>
#define UC unsigned char

void map(void (*f)(UC, UC), UC*, UC);
void imprime_element(UC, UC);

void main(void) {
  UC tableau[] = {1, 2, 3, 4, 5, 6, 7, 8};

  SCON0 = 0x50;
  TMOD |= 0x20;
  TH1 = 0xFF;
  PCON = 0x80;
  TR1 = 1;
  TI_0 = 1;

  map(imprime_element, tableau, 8);
  while (1);
}

void map(void (*f)(UC, UC), UC *xs, UC n) {
  UC i;
  f = imprime_element;
  for (i = 0; i < n; i++) { f(i, xs[i]); }
}

void imprime_element(UC i, UC x) {
  printf("tableau[%d] = %d\n", (int)i, (int)x);
}