Okay so I created a header called One.h file to include my class of a 3d vector and then I use a source file called main.cxx to input the class into a int function. However I keep getting these errors and I been trying for days to fix it but I can’t. I am new to c++ so do not be so harsh.

`/usr/include/c++/4.8.2/bits/stl_iterator_base_types.h:165:53: error: no type named ‘iterator_category’ in ‘class Vector3d’ typedef typename _Iterator::iterator_category iterator_category; ^ /usr/include/c++/4.8.2/bits/stl_iterator_base_types.h:166:53: error: no type named ‘value_type’ in ‘class Vector3d’ typedef typename _Iterator::value_type value_type; ^ /usr/include/c++/4.8.2/bits/stl_iterator_base_types.h:167:53: error: no type named ‘difference_type’ in ‘class Vector3d’ typedef typename _Iterator::difference_type difference_type; ^ /usr/include/c++/4.8.2/bits/stl_iterator_base_types.h:168:53: error: no type named ‘pointer’ in ‘class Vector3d’ typedef typename _Iterator::pointer pointer; ^ /usr/include/c++/4.8.2/bits/stl_iterator_base_types.h:169:53: error: no type named ‘reference’ in ‘class Vector3d’ typedef typename _Iterator::reference reference; ^`

This file is my One.h header file

```
#include <iostream>
#include <math.h>
#include <stdio.h>
using namespace std;
class Vector3d {
// Class of a Euclidean 3d vector
private:
float x;
float y;
float z;
// The x y and z components that are our private data members
public:
Vector3d(float xaxis, float yaxis, float zaxis)
{
x = xaxis;
y = yaxis;
z = zaxis;
}
// Creating a constructor to help access the members of the class
float getx() { return x; }
float gety() { return y; }
float getz() { return z; }
// Used to actually get the values of our members so functions to print out values
float normVector()
{
float result = sqrt(pow(x, 2) + pow(y, 2) + pow(z, 2));
return result;
// The norm of the vector an function with in the class
}
};
float distance(Vector3d v1, Vector3d v2)
// We have a function outside the class, the arguements are objects of the same class but two different objects
// so like two different vectors
{
return sqrt(
pow(v1.getx() - v2.getx(), 2)
+ pow(v1.gety() - v2.gety(), 2)
+ pow(v1.getz() - v2.getz(), 2)
);
// In the function we can use v1.getx and v2.getx to access and put the values of the private members in the class
// This is the distance formula between to vectors
```

main.cxx file

```
#include "One.h"
int main()
{
Vector3d v1(2, 2, 2);
v1.getx();
v1.gety();
v1.getz();
// Our vector one with defiining values
v1.normVector();
cout << " Components and the norm of my first vector " << endl;
cout << " X1 axis t:t " << v1.getx() << endl;
cout << " Y1 axis t:t " << v1.gety() << endl;
cout << " Z1 axis t:t " << v1.getz() << endl;
cout << " The norm of our first vector t:t " << v1.normVector() << endl;
Vector3d v2(3, 3, 3);
v2.getx();
v2.gety();
v2.getz();
cout << " Components and the norm of my second vector " << endl;
cout << " X2 axis t:t " << v2.getx() << endl;
cout << " Y2 axis t:t " << v2.gety() << endl;
cout << " Z2 axis t:t " << v2.getz() << endl;
cout << " The norm of our second vector " << v2.normVector() << endl;
cout << "The distance between vector one and two t:t " << distance(v1, v2) << " units." << endl;
// Here we can use the cout operator to compile the distance formula we created earlier and make it visible on the screen
return 0;
}
```

Source: Windows Questions C++