相关疑难解决方法(0)

我试过了;

void *malloc(unsigned int);
struct deneme {
    const int a = 15;
    const int b = 16;
};

int main(int argc, const char *argv[])
{
    struct deneme *mydeneme = malloc(sizeof(struct deneme));
    return 0;
}

这是编译器的错误:

gereksiz.c:3:17: error: expected ':', ',', ';', '}' or '__attribute__' before '=' token

而且,这也是;

void *malloc(unsigned int);
struct deneme {
    const int a;
    const int b;
};

int main(int argc, const char *argv[])
{
    struct deneme *mydeneme = malloc(sizeof(struct deneme));
    mydeneme->a = 15;
    mydeneme->b = 20; …

这是我的问题,问题出在评论中

const int a = 5;
const_cast<int&>(a)=7; //throw over const attribute in a,and assign to 7
std::cout<<a<<std::endl; //why still out put 5!!!!!!!!!!

谁可以告诉我为什么,有些书籍会考虑这些问题来推荐？谢谢!