通过指针修改C++类的私有变量

#include <stdio.h>

class tt
{
private:
 int k;
public:
 inline int getK(){return k;}
};

int main(int argc, char* argv[])
{
 tt t;
 *(int*)&t = 10;
 printf("%d/n",t.getK());
 return 0;
}