Receiving Error C2670 in Visual Studios 2019 - c++

Question

I've searched throughout my entire code, and there aren't any other issues except for this section. The semicolon at the end of the forward-slashed line is the issue. Is there something I'm missing? Full error message below.
source\repos\Square Matrix\SquareMatrix.cpp(108,27): error C2760: syntax error: unexpected token ';', expected '{'
#pragma once
#include <stdexcept>
#include "SquareMatrix.h"
template<typename T>
class SquareMatrix
{
private:
size_t _size; //will be the size of the array. size_t makes sure i only use nonnegative integers for the size
T **_ptr;
public:
SquareMatrix(); //zero parameter constructor
SquareMatrix(const SquareMatrix& rhs); //copy constructor
~SquareMatrix(); //destructor
SquareMatrix(SquareMatrix&& rhs); //Move Constructor
SquareMatrix& operator=(const SquareMatrix& rhs); //Copy assignment Operator
SquareMatrix& operator=(SquareMatrix&& rhs); //Move Assignment Operator
void resize(size_t new_size);
T& at(int row, int column);
size_t size() const;
};
template<typename T>
void SquareMatrix<T>::resize(size_t new_size)
{
std::cout << "Input size of the new matrix: " << std::endl;
std::cin >> new_size;
for (int i = 0; i < _size; i++)
{
delete[] _ptr[i];
}
if (_ptr != nullptr)
delete[] _ptr;
if (new_size != _size)
{
_ptr = new T * [new_size];
for (int i = 0; i < new_size; i++)
{
// _ptr[i] = T *[new_size]; //
}
}
}

Answer 1

It seems that the issue might be in the declaration of your class SquareMatrix. You have not posted it so I cant tell for sure but I tested your method implementation with a dummy class and I don't get any errors in compilation.
Make sure that your class declaration and method declaration have this syntax:
template<class T>
class SquareMatrix {
T a, b;
public:
void resize(size_t new_size);
};
You can review the section on Class Templates to get some examples and a more through explanation.
http://www.cplusplus.com/doc/oldtutorial/templates/