Trying to Overload the << Operator, getting errors - c++

Question

I am working on overloading the << operator for my MyVector class. It all looks correct to me but I am getting errors when I try to run it. What am I doing wrong?
The first error is (I think) "unexpected token(s) preceding ';' " for line 84 in my .h file. (I say "I think" because I accidentally sorted the errors by description and don't know how to get it back to the default sort. If you can also advise me on how to do that, I would appreciate it.)
Thank you for your time!
MyVector.h
#pragma once
#include <iostream>
class MyVector
{
private:
//declaring variables
int *myPointer;
int vectorSize;
int vectorCapacity;
const int BASE_CAPACITY = 2;
public:
//Default Constructor
//Purpose: Create vector with default capacity of 2
//Parameter: void
//Return: None
MyVector();
//Parameterized Constructor
//Purpose: Creates a vector of capacity "n"
//Parameter: int
//Return: None
MyVector(const int);
//Default Deconstructor
//Purpose: Deletes any dynamically allocated storage
//Parameter: void
//Return: None
~MyVector();
//Copy Constructor
//Purpose: Copy the data of the vector
//Parameter: a MyVector object
//Return: None
MyVector(const MyVector&);
//Overloaded Assignment Operator
//Purpose: Copy one vector to the other when = is used
//Parameter: a MyVector object
//Return: a MyVector object
MyVector& operator=(const MyVector&);
//The size Function
//Purpose: returns the size of the vector
//Parameter: void
//Return: int
int size() const;
//The capacity Function
//Purpose: returns the capacity of the vector
//Parameter: void
//Return: int
int capacity() const;
//The clear Function
//Purpose: Deletes all elements from the vector and resets the size and capacity
//Parameter: void
//Return: None
void clear();
//The push_back Function
//Purpose: adds an integer to the vector
//Parameter: int
//Return: None
void push_back(const int);
//The at Function
//Purpose: returns the value of the element at position n
//Parameter: int
//Return: int
int at(const int) const;
// Overloaded << operation
// Purpose: Output a Vector
// Parameter: an ostream and a vector
// Return: ostream
friend ostream& operator<<(ostream& out, const MyVector& rho);
};
MyVector.cpp
#include "MyVector.h"
#include <iostream>
using namespace std;
MyVector::MyVector()
{
//create a vector with size 0 and capacity 2
vectorSize = 0;
vectorCapacity = BASE_CAPACITY;
myPointer = new int[vectorSize];
}
MyVector::MyVector(int n)
{
//create a vector of capacity n with the size 0
vectorSize = 0;
vectorCapacity = n;
myPointer = new int[vectorSize];
}
MyVector::~MyVector()
{
//check to see if 'myPointer' has a value and delete it
if (myPointer != NULL)
{
delete[] myPointer;
myPointer = NULL;
}
}
MyVector::MyVector(const MyVector& b)
{
if (b.myPointer != NULL)
{
vectorCapacity = b.vectorCapacity;
vectorSize = b.vectorSize;
myPointer = new int[vectorCapacity];
for (int i = 0; i < vectorSize; i++)
{
myPointer[i] = b.at(i);
}
}
else
{
delete[] myPointer;
}
}
MyVector& MyVector::operator=(const MyVector& rho)
{
//test for self assignment
if (this == &rho)
return *this;
// clean up the vector on the left side
delete[] this->myPointer;
// create a new vector of the correct size and capacity
vectorSize = rho.vectorSize;
vectorCapacity = rho.vectorCapacity;
this->myPointer = new int[vectorSize];
// copy the data over
for (int i = 0; i < vectorSize; i++)
{
this->myPointer[i] = rho.myPointer[i];
}
//return this object
return *this;
}
int MyVector::size() const
{
//return the size of the vector
return vectorSize;
}
int MyVector::capacity() const
{
//return the capacity of the vector
return vectorCapacity;
}
void MyVector::clear()
{
//clear the vector and reset it to a size of 0 and capacity of 2
vectorSize = 0;
vectorCapacity = BASE_CAPACITY;
delete[] myPointer;
myPointer = new int[vectorSize];
}
void MyVector::push_back(int addToVector)
{
//this variable will be used to double the capacity
const int DOUBLE_CAPACITY = 2;
//check to see if the size of the vector has reached the capacity
if (!(vectorSize < vectorCapacity))
{
//make sure the capacity of the vector is greater than 0
if (vectorCapacity > 0)
{
vectorCapacity *= DOUBLE_CAPACITY;
}
else
{
//if vector capacity is 0 or less then the capacity equals 2
vectorCapacity = BASE_CAPACITY;
}
//create a tempVector that will have double the capacity of the last vector.
int *tempVector = new int[vectorCapacity];
//copy the contents of the old vector to the tempVector
if (myPointer != NULL)
{
for (int i = 0; i < vectorCapacity; i++)
{
tempVector[i] = myPointer[i];
}
}
// delete the old array using the destructor
MyVector::~MyVector();
//set the pointer to the new tempVector
myPointer = tempVector;
}
//add the passed in value to the vector
myPointer[vectorSize] = addToVector;
//increment the size of the vector
vectorSize++;
}
int MyVector::at(int x) const
{
//throw exception if index outside the range of the vector
if (x > (vectorSize - 1))
{
throw x;
}
//return the value of the integer stored at index x
return myPointer[x];
}
ostream& operator<<(ostream& out, const MyVector& rho)
{
// output each value in the vector
for (int i = 0; i < rho.size; i++)
{
out << rho.at(i) << " ";
}
// return the ostream
return out;
}

Answer 1

friend ostream& operator<<(ostream& out, const MyVector& rho);
I'm assuming this is the line in question. You need to put std:: in front of ostream so it knows where to look for it. Although you put using namespace std; in the implementation file, that doesn't affect the header.
friend std::ostream& operator<<(std::ostream& out, const MyVector& rho);
On another note, don't use using namespace std;.