模拟memmove

#include<stdio.h>
#include<stdlib.h>
#include<assert.h>
#include<string.h>
void *MyMemmove(void *str1, void *str2, int count)
{
	assert(str1 != NULL&&str2 != NULL);
	if (str1 < str2)
	{
		while (count--)//从前往后赋值
		{
			*(char *)str1 = *(char *)str2;
			((char *)str1)++;
			((char *)str2)++;
		}
	}
	else
	{
		while (count--)//从后往前赋值
		{
			*((char *)str1 + count) = *((char *)str2 + count);
		}
	}
}
int main()
{
	int i = 0;
	int str1[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
	MyMemmove(str1 + 2, str1, 16);
	for (i = 0; i < 9; i++)
	{
		printf("%d ", str1[i]);
	}
	printf("\n");

	system("pause");
	return 0;
}