C编程实现字符串的循环右移

void loopMove(char* str,int n)
{
	int i = 0;
	char* temp = NULL;
	int strLen = 0;
	char *head = str;  //指向字符串头部

	while (*str++);

	strLen = str - head - 1;   //计算字符串长度
	n = n % strLen;			   //计算字符串尾部移动到头部的字符个数
	temp = (char*)malloc(n); 

	for (i = 0; i < n; i++)
	{
		temp[i] = head[strLen - n + i];   //临时存放从尾部移动到头部的字符
	}
	for (i = strLen - 1; i >= n; i--)
	{
		head[i] = head[i - n];     //从头部移动到尾部
	}

	for (i = 0; i < n; i++)
	{
		head[i] = temp[i];      //从临时内存区复制尾部字符
	}

	free(temp);
}



int main()
{
	char str[] = "abcdefgbc";
	
	loopMove(str, 4);
	
	cout << str << endl;

	system("pause");
	return 0;
}