c11_014.c

来自「稀疏矩阵、链表、图、队列、二叉树、多叉树、排序、遗传算法等的实现」· C语言 代码 · 共 18 行

#include <stdlib.h>

  /* ... */

  T *tmp;
  tmp = realloc(p, NewNumElems * sizeof *p);
  if(tmp != NULL)
  {
    /* the resizing worked */
    p = tmp;
  }
  else
  {
    /* The resizing didn't work, p still points to the
     * old data.
     */
  }