c++中的编码这为啥错误呀？

#include
using namespace std;
int main()
{
int num=100;
do
{ int a=0;
int b=0;
int c=0;
a=num%10;
b=num/10%10;
c=num/100;
if(num=aaa+bbb+ccc)
{
cout<
}
num++;
}
while(num<1000);
return 0;
}

if(num==a*a*a+b*b*b+c*c*c)

1.#include后面少了iostream
2.数学中可以省略的乘号，程序设计中不能省略，像aaa应为aaa
代码应修改为：

#include<iostream>
using namespace std;
int main()
{
    int num = 100;
    do
    {
        int a = 0;
        int b = 0;
        int c = 0;
        a = num % 10;
        b = num / 10 % 10;
        c = num / 100;
        if (num = a * a * a + b * b * b + c * c * c)
        {
            cout << num << endl;
        }
        num++;
    } while (num < 1000);
    return 0;
}

if(num=aaa+bbb+ccc)这个地方的语法有误，应该是num == a * a * a + b * b * b + c * c * c