expected an identifier c++ - c++

Question

I am trying to write a class and I finally got it to compile, but visual studio still shows there are errors (with a red line).
The problem is at (I wrote #problem here# around the places where visual studio draws a red line):
1. const priority_queue<int,vector<int>,greater<int> #># * CM::getHeavyHitters() {
2. return & #heavyHitters# ;
3. }
And it says:
"Error: expected an identifier" (at the first line)
"Error: identifier "heavyHitters" is undefined" (at the second line)
The first problem I don't understand at all. The second one I don't understand because heavyHitters is a a member of CM and I included CM.
BTW, I tried to build. It didn't fix the problem.
Thanks!!!
The whole code is here:
Count-Min Sketch.cpp
#include "Count-Min Sketch.h"
CM::CM(double eps, double del) {
}
void CM::update(int i, int long unsigned c) {
}
int long unsigned CM::point(int i) {
int min = count[0][calcHash(0,i)];
return min;
}
const priority_queue<int,vector<int>,greater<int>>* CM::getHeavyHitters() {
return &heavyHitters;
}
CM::CM(const CM &) {
}
CM::~CM() {
}
int CM::calcHash(int hashNum, int inpt) {
int a = hashFunc[hashNum][0];
int b = hashFunc[hashNum][1];
return ((a*inpt+b) %p) %w;
}
bool CM::isPrime(int a) {
bool boo = true;
return boo;
}
int CM::gePrime(int n) {
int ge = 2;
return ge;
}
Count-Min Sketch.h
#pragma once
#ifndef _CM_H
#define _CM_H
using namespace std;
#include <queue>
class CM {
private:
// d = ceiling(log(3,1/del)), w = ceiling(3/eps)
int d,w,p;
// [d][w]
int long unsigned *(*count);
// [d][2]
int *(hashFunc[2]);
// initialized to 0. norm = sum(ci)
int long unsigned norm;
// Min heap
priority_queue<int,vector<int>,greater<int>> heavyHitters;
// ((ax+b)mod p)mod w
int calcHash(int hashNum, int inpt);
// Is a a prime number
bool isPrime(int a);
// Find a prime >= n
int gePrime(int n);
public:
// Constructor
CM(double eps, double del);
// count[j,hj(i)]+=c for 0<=j<d, norm+=c, heap update & check
void update(int i, int long unsigned c);
// Point query ai = minjcount[j,hj(i)]
int long unsigned point(int i);
const priority_queue<int,vector<int>,greater<int>>* getHeavyHitters();
// Copy constructor
CM(const CM &);
// Destructor
~CM();
};
#endif // _CM_H

Answer 1

>> is a single token, the right-shift (or extraction) operator. Some compilers don't recognize it correctly in nested template specialization. You have to put a space between the two angle brackets like this:
Type<specType<nestedSpecType> > ident;
^^^