/in/foo.cc:12:29: error: 'Matrix3' does not name a type
   12 |     Vector3 operator*(const Matrix3& matrix)const{
      |                             ^~~~~~~
/in/foo.cc: In member function 'Vector3 Vector3::operator*(const int&) const':
/in/foo.cc:13:27: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   13 |         int newX=x*matrix.v[0][0]+y*matrix.v[0][1]+z*matrix.v[0][2];
      |                           ^
/in/foo.cc:13:44: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   13 |         int newX=x*matrix.v[0][0]+y*matrix.v[0][1]+z*matrix.v[0][2];
      |                                            ^
/in/foo.cc:13:61: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   13 |         int newX=x*matrix.v[0][0]+y*matrix.v[0][1]+z*matrix.v[0][2];
      |                                                             ^
/in/foo.cc:14:27: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   14 |         int newY=x*matrix.v[1][0]+y*matrix.v[1][1]+z*matrix.v[1][2];
      |                           ^
/in/foo.cc:14:44: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   14 |         int newY=x*matrix.v[1][0]+y*matrix.v[1][1]+z*matrix.v[1][2];
      |                                            ^
/in/foo.cc:14:61: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   14 |         int newY=x*matrix.v[1][0]+y*matrix.v[1][1]+z*matrix.v[1][2];
      |                                                             ^
/in/foo.cc:15:27: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   15 |         int newZ=x*matrix.v[2][0]+y*matrix.v[2][1]+z*matrix.v[2][2];
      |                           ^
/in/foo.cc:15:44: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   15 |         int newZ=x*matrix.v[2][0]+y*matrix.v[2][1]+z*matrix.v[2][2];
      |                                            ^
/in/foo.cc:15:61: error: request for member 'v' in 'matrix', which is of non-class type 'const int'
   15 |         int newZ=x*matrix.v[2][0]+y*matrix.v[2][1]+z*matrix.v[2][2];
      |                                                             ^
/in/foo.cc: In function 'std::istream& operator>>(std::istream&, Vector3&)':
/in/foo.cc:24:33: error: 'Vector' was not declared in this scope; did you mean 'vector'?
   24 |         in>>vector.x>>vector.y>>Vector.z;
      |                                 ^~~~~~
      |                                 vector
/in/foo.cc: In member function 'Vector3 Matrix3::operator*(const Vector3&) const':
/in/foo.cc:51:33: error: 'int Vector3::x' is private within this context
   51 |         int newX=v[0][0]*vector.x+v[0][1]*vector.y+v[0][2]*vector.z;
      |                                 ^
/in/foo.cc:5:9: note: declared private here
    5 |     int x,y,z;
      |         ^
/in/foo.cc:51:50: error: 'int Vector3::y' is private within this context
   51 |         int newX=v[0][0]*vector.x+v[0][1]*vector.y+v[0][2]*vector.z;
      |                                                  ^
/in/foo.cc:5:11: note: declared private here
    5 |     int x,y,z;
      |           ^
/in/foo.cc:51:67: error: 'int Vector3::z' is private within this context
   51 |         int newX=v[0][0]*vector.x+v[0][1]*vector.y+v[0][2]*vector.z;
      |                                                                   ^
/in/foo.cc:5:13: note: declared private here
    5 |     int x,y,z;
      |             ^
/in/foo.cc:52:33: error: 'int Vector3::x' is private within this context
   52 |         int newY=v[1][0]*vector.x+v[1][1]*vector.y+v[1][2]*vector.z;
      |                                 ^
/in/foo.cc:5:9: note: declared private here
    5 |     int x,y,z;
      |         ^
/in/foo.cc:52:50: error: 'int Vector3::y' is private within this context
   52 |         int newY=v[1][0]*vector.x+v[1][1]*vector.y+v[1][2]*vector.z;
      |                                                  ^
/in/foo.cc:5:11: note: declared private here
    5 |     int x,y,z;
      |           ^
/in/foo.cc:52:67: error: 'int Vector3::z' is private within this context
   52 |         int newY=v[1][0]*vector.x+v[1][1]*vector.y+v[1][2]*vector.z;
      |                                                                   ^
/in/foo.cc:5:13: note: declared private here
    5 |     int x,y,z;
      |             ^
/in/foo.cc:53:13: error: expected unqualified-id before 'new'
   53 |         int new =v[2][0]*vector.x+v[2][1]*vector.y+v[2][2]*vector.z;
      |             ^~~
/in/foo.cc:54:34: error: 'newZ' was not declared in this scope; did you mean 'newY'?
   54 |         return Vector3(newX,newY,newZ);
      |                                  ^~~~
      |                                  newY
/in/foo.cc: In function 'int main()':
/in/foo.cc:83:12: error: no match for 'operator*' (operand types are 'Vector3' and 'Matrix3')
   83 |     cout<<v*m<<endl;
      |           ~^~
      |           | |
      |           | Matrix3
      |           Vector3
/in/foo.cc:9:13: note: candidate: 'Vector3 Vector3::operator*(const Vector3&) const'
    9 |     Vector3 operator*(const Vector3& other)const{
      |             ^~~~~~~~
/in/foo.cc:9:38: note:   no known conversion for argument 1 from 'Matrix3' to 'const Vector3&'
    9 |     Vector3 operator*(const Vector3& other)const{
      |                       ~~~~~~~~~~~~~~~^~~~~
/in/foo.cc:12:13: note: candidate: 'Vector3 Vector3::operator*(const int&) const'
   12 |     Vector3 operator*(const Matrix3& matrix)const{
      |             ^~~~~~~~
/in/foo.cc:12:38: note:   no known conversion for argument 1 from 'Matrix3' to 'const int&'
   12 |     Vector3 operator*(const Matrix3& matrix)const{
      |                       ~~~~~~~~~~~~~~~^~~~~~