void strToint()
{
gets(str);	int k = 0;	int num = 0;	for (int i = 0; str[i] != '/0'; i++)	{		if (str[i] == '-')//遇見負號		{			i++;			while (str[i] != ' '&& str[i] != '/0')			{				num = num * 10 + str[i] - '0';				i++;			}			a[k++] = (-1)* num;			num = 0;		}		else if (str[i] == ' ')//遇見空格就計算出數		{			a[k++] = num;			num = 0;		}		else		{			num = num * 10 + str[i] - '0';			if (str[i + 1] == '/0')			{				a[k++] = num;//累計數的大小				num = 0;			}		}	}
}
嗯 注釋一下就看懂了。。