c++ - Reference to pointer issue? -

this have:

void g(int *&x) {     int = 3;     x = &a; } void h(const int *&x) {     int b = 2;     x = &b; } int main() {     int *p = new int;     *p = 5;     g(p);     cout << p << " " << *p << endl; // print #2     cout << p << " " << *p << endl; // print #3     const int*p1 = p;     h(p1);     cout << p << " " << *p << endl; // print #4     cout << p << " " << *p << endl; // print #5 } 

from understand, print#2 , print#3 should have same result isn't when compile it. goes print#4andprint#5 too. can me?
updated : output looks when compiled on computer:

00eff9d4 3 //1 00eff9d4 1552276352 //2 00eff9d4 2 //3 00eff9d4 1552276352 //4   

shouldn't (1) , (2) same ? (3) , (4) either.

i assume mean int a in g().

your function make pointer point a local variable, after termination of function, go out of scope.

you dereference pointer, invokes undefined behavior.