Count Numbers

#include <errno.h>
#include <inttypes.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
static uint32_t count(FILE *in) {
  uint32_t c = 0;
  for (;;) {
    errno = 0;
    int x;
    int ret = fscanf(in, "%d", &x);
    if (ret == EOF || !ret || errno) {
      break;
    }
    ++c;
  }
  return c;
}

int main(void) {
  FILE *in = fopen("data1.txt", "r");
  if(!in) {
    exit(1);
  }
  uint32_t c = count(in);
  fclose(in);
  printf("%"PRIu32"\n", c);
  return 0;
}