scanf9.c

绝对正真的stdio.h的实现

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int
main (void)
{
  int matches;
  char str[10];

  str[0] = '\0';
  matches = -9;
  matches = sscanf ("x ]", "%[^] ]", str);
  printf ("Matches = %d, string str = \"%s\".\n", matches, str);
  printf ("str should be \"x\".\n");

  if (strcmp (str, "x"))
    abort ();

  str[0] = '\0';
  matches = -9;
  matches = sscanf (" ] x", "%[] ]", str);
  printf ("Matches = %d, string str = \"%s\".\n", matches, str);
  printf ("str should be \" ] \".\n");

  if (strcmp (str, " ] "))
    abort ();

  return 0;
}