Resolved Issue #64

[Modernbeast02]

Implemented addition, subtraction, and multiplication of a matrix with a scaler. Resolved Issue #64

[Ishwarendra]

Hi @Modernbeast02, Do the following changes:

• Update the signature of function in matrix.hpp wherever you have introduced new type G
• Also update function signature Matrix<T> operator *=(T num) to Matrix<T> operator*=(G num) in matrix.hpp and update its implementation as well in matrix.cpp. Do same update for addition and subtraction operator too.
• Don't implement any function, reuse the already implemented functions. An example is shown below:

Right way to overload operator+ are

```cpp template Matrix operator+(G num, const Matrix &matrix) { Matrix res = matrix; res += num; return res; } template Matrix operator+(const Matrix &matrix, G num) { Matrix res = matrix; res += num; return res; } ```

• Check function signatures, don't use const Type & everywhere.
  • For example you have implemented Matrix<T> operator*(const Matrix<T> &matrix, G num) but if you see matrix.hpp the function signature says template <class T> Matrix<T> operator*(Matrix<T>, const T &); Same goes for operator+ and operator- too.
  • NOTE that Matrix<T> is passed by value and not by reference.

Code for operator* as shown

```cpp template Matrix operator*(Matrix matrix, const G &num) { matrix *= num; return matrix; } ```