Overloaded functions, redefinitions, C2371 and C2556 C++ - c++

Question

Ok so I've got 3 files:
definitions.h which contains
#ifndef COMPLEX_H
#define COMPLEX_H
class Complex
{
char type; //polar or rectangular
double real; //real value
double imaginary; //imaginary value
double length; //length if polar
double angle; //angle if polar
public:
//constructors
Complex();
~Complex();
void setLength(double lgth){ length=lgth;}
void setAngle(double agl){ angle=agl;}
double topolar(double rl, double img, double lgth, double agl);
#endif
functions.cpp which contains
#include "Class definitions.h"
#include <iostream>
#include <fstream>
#include <iomanip>
#include <string.h>
#include <math.h>
#include <cmath>
#include <vector>
using namespace std;
Complex::topolar(double rl, double img, double lgth, double agl)
{
real=rl;
imaginary=img;
lgth = sqrt(pow(real,2)+pow(imaginary,2));
agl = atan(imaginary/real);
Complex::setLength(lgth);
Complex::setAngle(agl);
return rl;
return img;
return lgth;
return agl;
}
and the main programme contains:
#include "Class definitions.h"
#include <iostream>
#include <fstream>
#include <iomanip>
#include <string.h>
#include <cmath>
#include <vector>
using namespace std;
int main(){
vector<Complex> v;
Complex *c1;
double a,b,d=0,e=0;
c1=new Complex;
v.push_back(*c1);
v[count].topolar(a,b,d,e);
But the I keep getting error C2371: redefinition; different basic types
and C2556: overloaded function differes only by return type
everything i have found online says to make sure the function.cpp file isnt included in the main but as I haven't made that mistake I'm running out of ideas, especially seeing as all my other functions that are set up in the same way (with seperate definition and declaration) do work.
Any help would be great!
Thanks
H
x

Answer 1

As declared topolar function should return double, but the definition in functions.cpp doesn't says that
Complex::topolar(double rl, double img, double lgth, double agl)
{
try changing this to
double Complex::topolar(double rl, double img, double lgth, double agl)
{

Answer 2

Your topolar function is defined as returning double but the implementation has no return type. I am not sure if this is the error, but it certainly is an error. You need
double Complex::topolar(double rl, double img, double lgth, double agl)
in the implementation.
Furthermore, you seem to have many return statements in the implementation. This is also an error. Only the first one will have effect:
return rl; // function returns here. The following returns are never reached.
return img;
return lgth;
return agl;