* p = k; //This is wrong! This sentence must be preceded by a premise, which can be like this.
int *p,k,y;
p = & ampy;
* p = k; //At this time, it means that the value of variable K is assigned to the space pointed by pointer variable P, which is equivalent to y = k;;
2、int *p,k;
p = & ampk; //is equivalent to assigning the address of the variable k to the pointer variable p.