字符串反转

int StringReverse(char str[], int length)
{
	if (str==NULL)
	{
		printf("输入字符串为空！\n");
		return 0;
	}
	int i=0,j=length-1;
	while (i<j)
	{
		str[i] = str[i]^str[j];
		str[j] = str[i]^str[j];
		str[i] = str[i]^str[j];
		i++;
		j--;
	}

	return 0;
}