#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
void *my_memmove(void *p1, const void *p2, size_t count)
{
assert(p1);
assert(p2);
char *dest = (char*)p1;
char *src = (char*)p2;
dest = dest + 16;
src = src + 8;
if ((src <= dest) && (dest <= (src + count)))
{
while (count--)
{
*(dest + count) = *(src + count);
}
}
else
{
while (count--)
{
*dest++ = *src++;
}
}
return p1;
}
int main()
{
int arr[10] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
size_t count =16;
int *ret=my_memmove(arr, arr, count);
int i = 0;
for (i = 0; i < 10; i++)
{
printf("%d ", *(ret+i));
}
system("pause");
return 0;
}【C语言】【面试题】【笔试题】模拟实现数据库中memmove函数
原文：http://10740329.blog.51cto.com/10730329/1714513