吴裕雄--天生自然C语言开发：内存管理

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

int main()
{
   char name[];
   char *description;

   strcpy(name, "Zara Ali");

   /* 动态分配内存 */
   description = (char *)malloc(  * sizeof(char) );
   if( description == NULL )
   {
      fprintf(stderr, "Error - unable to allocate required memory\n");
   }
   else
   {
      strcpy( description, "Zara ali a DPS student in class 10th");
   }
   printf("Name = %s\n", name );
   printf("Description: %s\n", description );
}

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

int main()
{
   char name[];
   char *description;

   strcpy(name, "Zara Ali");

   /* 动态分配内存 */
   description = (char *)malloc(  * sizeof(char) );
   if( description == NULL )
   {
      fprintf(stderr, "Error - unable to allocate required memory\n");
   }
   else
   {
      strcpy( description, "Zara ali a DPS student.");
   }
   /* 假设您想要存储更大的描述信息 */
   description = (char *) realloc( description,  * sizeof(char) );
   if( description == NULL )
   {
      fprintf(stderr, "Error - unable to allocate required memory\n");
   }
   else
   {
      strcat( description, "She is in class 10th");
   }

   printf("Name = %s\n", name );
   printf("Description: %s\n", description );

   /* 使用 free() 函数释放内存 */
   free(description);
}