错误：预期的构造函数，析构函数或'（'标记之前的类型转换。即使我有构造函数？

Question

I am trying to compile my LineADT.cpp file but keep getting this error:

error: expected constructor, destructor, or type conversion before ‘(’ token
LineT::LineT(PointT::PointT st, MapTypes::CompassT ornt, unsigned int l) {

My LineADT.cpp:

#include "MapTypes.h"
#include "PointADT.h"
#include "LineADT.h"

LineT::LineT(PointT::PointT st, MapTypes::CompassT ornt, unsigned int l) { //Error 

this->s = st;
this->o = ornt;
this->L = l;

}

My LineADT.h:

#ifndef LINET_H
#define LINET_H

#include "MapTypes.h"
#include "PointADT.h"


class LineT {

    private:
        PointT s;
        MapTypes::CompassT o;
        unsigned int L;

    public:

        LineT (PointT st, MapTypes::CompassT ornt, unsigned int l);
};

#endif

My PointADT.h:

#ifndef POINTT_H
#define POINTT_H

class PointT {

    private:
        double xc;
        double yc;

    public:
        PointT (double x, double y);
};

#endif

My maptypes.h:

#ifndef MAPTYPES_H
#define MAPTYPES_H

class MapTypes {

    public:
        enum CompassT {N, S, E, W};
        enum LandUseT {Recreational, Transport, Agricultural, Residential, Commercial};
        enum RotateT {CW, CCW};
};

#endif

What I don't understand is why the compiler doesn't recognize that the line is a constructor (at least what I think).

Answer 1

Two problems.

First:

LineT::LineT(PointT::PointT st, MapTypes::CompassT ornt, unsigned int l) {
//                 ^^^^^^^^

Nope.

LineT::LineT(PointT st, MapTypes::CompassT ornt, unsigned int l) {

Second: PointT has no default constructor, so you must initialise it, not merely assign to it later.

LineT::LineT(PointT st, MapTypes::CompassT ornt, unsigned int l)
    : s(st)
    , o(ornt)
    , L(l)
{}

As a point of style, I would also recommend using much clearer and more consistent names.