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I am trying to declare a reference variable to a pointer.
#include<iostream>
using namespace std;
int main()
{
int m = 10;
int *p = &m;
int & ref = p; // this is showing error
}
I am reading a c++ book and in the book i saw this code, but this is showing an error.
It is supposed to set ref as a reference variable to point to pointer p and in turn point to m.

You are missing the asterisk * at the reference to pointer declaration:
int *p = &m;
int *&ref = p;

#include<iostream>
using namespace std;
int main()
{
int m = 10;
int *p = &m;
int *& ref = p; //read from right to left,so *& is a refrence to pointer
}