小编ale*_*lex的帖子

以下是我的程序的两个变体

struct customer{
    char fullname[35];
    double payment;
};

int main()
{
    customer alex{"Alex", 15};
    return 0;
}

struct customer{
    char fullname[35];
    double payment;
};

int main()
{
    customer* alex = new customer {"Alex", 15};
    return 0;
}

第一个工作正常，但第二个引发error:could not convert '{"Alex", 15}' from 'brace-enclosed initializer list' to 'customer'. 有什么问题？

我在书中有下一个例子

const int** pp2;
int* p1;
const int n = 13;
pp2 = &p1; // not allowed, but suppose it were
*pp2 = &n; // valid, both const, but sets p1 to point at n
*p1 = 10; // valid, but changes const n

但是，如果 pp2 是指向常量的指针，那么表达式 *pp2=&n 如何有效？