初始化后是一个变量引用？

Question

在这个例子中,是什么x？它是一个参考？

int x  = 5;   //What is x?
int &y = x;   //This is an alias for x
int *z = &x;  //This is a pointer to x

Answer 1

没有x是int可变的.y是int(x)的引用,z是int(x)的指针.