技術標籤：筆記

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x + y = z x+y=z x+y=z

在這裡插入程式碼片

去#include <stdio.h>
#include <string.h>
#include<assert.h>
void* my_memmove(void* dest, const void* src, size_t count)
{
	assert(dest &&
 
 src);
	void* start = dest;
	if (dest < src)
	{
		// 從前向後拷貝
		while (count--)
		{
			*(char*)dest = *(char*)src;
			++(char*)dest;
			++(char*)src;
		}
	}
	else
	{
		// 從後向前拷貝
		while (count--)
		{
			*((char*)dest + count) = *((char*)src + count);
		}
	}
	return start;
}
int main()
{
	int arr[] = { 1,2,3,4,5,6,7,8,9,10};
	my_memmove(arr + 2,arr,16);
}

煩煩煩煩煩fgggg

#include <stdio.h>
#include <string.h>
#include<assert.h>
void* my_memmove(void* dest, const void* src, size_t count)
{
assert(dest && src);
void* start = dest;
if (dest < src)
{
// 從前向後拷貝
while (count–)
{
(char)dest = (char)src;
++(char*)dest;
++(char*)src;
}
}
else
{
// 從後向前拷貝
while (count–)
{
((char)dest + count) = ((char)src + count);
}
}
return start;
}
int main()
{
int arr[] = { 1,2,3,4,5,6,7,8,9,10};
my_memmove(arr + 2,arr,16);
}